--- product_id: 17132526 title: "General Hydroponics GH4720 Farm Controller, Terra Cotta" price: "NZ$2234" currency: NZD in_stock: false reviews_count: 13 url: https://www.desertcart.nz/products/17132526-general-hydroponics-gh4720-farm-controller-terra-cotta store_origin: NZ region: New Zealand --- # 13-gallon reservoir 8-pack modules 43.3 lbs weight General Hydroponics GH4720 Farm Controller, Terra Cotta **Price:** NZ$2234 **Availability:** ❌ Out of Stock ## Summary > 🌱 Grow Big or Go Home! ## Quick Answers - **What is this?** General Hydroponics GH4720 Farm Controller, Terra Cotta - **How much does it cost?** NZ$2234 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/17132526-general-hydroponics-gh4720-farm-controller-terra-cotta) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Growth:** Enjoy a streamlined setup with 8 interconnected modules for maximum yield. - • **Space-Saving Design:** Compact and efficient, perfect for urban living or small spaces. - • **User-Friendly Setup:** Designed for both beginners and pros, making hydroponics accessible to all. - • **Sustainable Gardening:** Grow your own fresh produce while reducing your carbon footprint! - • **Elevate Your Green Thumb:** Transform your gardening game with the best-selling hydroponic system! ## Overview The General Hydroponics HGC706980 WaterFarm 8-Pack Hydroponic Grow System features eight modular units, each with a 13-gallon reservoir and an 8-gallon controller unit, designed for efficient and sustainable indoor gardening. ## Description The WaterFarm® 8-pack is eight WaterFarm module units connected to one Controller and integrated 13 gallon reservoir and an 8 gallon controller unit. The Controller will keep each unit topped off with the correct level of nutrient for low maintenance. The kit is powered by GH's Dual Diaphragm Air Pump and includes all the necessary hardware, supplies and Flora Series® nutrients. The grower can arrange the WaterFarm® units in a design that is suitable for any environment. This system does not include clay pebbles. Review: Excellent - I like this a lot, the included components are of exceptional quality. We wanted to add a third hydroponics system and decided to buy rather than build this time around. The square buckets allow you to pack them close together if you're growing smaller plants. We fit all 8 in a 2 x 4 ft grow tent and could grow 4 lettuce per bucket, which is enough to meet the daily salad needs of the family of 5. We're currently using ours for Cilantro, Tomatillos, Jalapenos and Egg plants with Tomatoes and salad greens in their own systems. Our tomatoes are in a DIY version of this and it works well but to be frank we didn't save enough going that way for it to be worthwhile and the 5 gallon buckets with net pot lids though great do not allow you to grow at as high a density in terms of plants per square foot. We love the controller and reservoir that comes as part of this system. They make a huge difference once the plants get bigger and allow us to go on vacation without worrying about the plants running out of water or nutrient. By the by this is a hybrid NFT-deep culture system providing the benefits of both. If you have the clearance recommend raising the buckets and controller/resevoir off the floor the height of a 5 gallon bucket plus 3" to simplify draining the system at the end of a grow or whenever you might need to. It's worth noting you can expand this system from 8 to 12 buckets. I' m sure this would work very well for smaller plants but would not recommend it for larger, nutrient hungry plants like Tomatoes without upgrading the nutrient circulation because the plants at the end of the line will likely receive water completely stripped of nutrient by the plants earlier in the line.We see a hint of this in both of our 8 bucket, air pump driven, circulating systems. A small electric pump replacement for the airlift fixes this but is only necessary when you have mature (4' plus high) tomatoes plants in all 8 buckets with lighting tailored to support maximum growth. We disconnect the air lift from the 1/2" tubing in the controller and add a $20-$30, 100-120 gallon per hour Eco+ pump and the problem is fixed in literally 5 mins. Ours is located in the basement inside a grow tent. We use a small fan to keep air moving and have experienced no moisture or mold issues. We're based in the Great Lakes and have cold winters. Our biggest problem is lack of pollinators. We have to do it all by hand and use a combination of paint brush and stem shaking to achieve high pollination rates. This is by far the most labor intensive chore associated with using this hydroponics system. About 30 mins per day at the height of flowering. If that sounds like more work than you want to deal with I wouldn't recommend trying anything that relies on pollination to produce what you want and recommend you check out a flood table-lettuce raft system which will cost considerably less and produce amazing lettuces ready to eat in 5 to 6 weeks. A 2x4 foot raft system can meet the lettuce requirements for a family of 4. This can also be a great option if you love to cook with fresh herbs. Would we buy another Waterfarm? Yes, without hesitation. Do we need to? No, one of these systems provides a lot of hydroponic growing space and I suspect would meet the needs of the average family of 4 looking to hydroponics to supplement their grocery purchases. Imagine 4 Tomatoe plants and 4 pepper or egg plants in a space 2'x16' or 4'x8' with no deer, yellow jacket, ant, racoon or rabbit damage. We have Tomatoes that are 7' high covered in perfect fruit. The kids pick them fresh off the vine at will. If this is what you're aiming for this s Waterfarm system can deliver it. Review: Great product but need to be inspected before shipped! - This would have received 5 stars across the board if it weren't for the fact that 30% of the predrilled holes weren't there! I'm sure this could have been avoided if it were a little more carefully inspected when packaged. I'm not ultimately worried about it as I have the tools to properly drill and insert 1/2" rubber grommets that I did have to pick up from my local hydro shop ($12 for 24 grommets, not a big deal!). Outside of an hour or two of my time picking up the new grommets and centering and drilling the holes properly everything seemed to be in tact and how it should be. If it works anything like their individual Waterfarm buckets that I'm currently running 4 of and having phenomenal success with I don't think I'll be displeased once I run this system. Will be making a purchase of 3-5 more in the next 30 days if all goes well, I would just rather not have to drill another 25-35 holes and run the risk of causing a bucket to leak if not done well enough! ## Features - Eight water farm module units with 13-gallon reservoir and 8-gallon controller unit - The water farm is general hydroponics' best selling hydroponic module - Brand: General Hydroponics - Item Weight: 43.3 lbs ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 3.8 out of 5 stars 87 Reviews | ## Images ![General Hydroponics GH4720 Farm Controller, Terra Cotta - Image 1](https://m.media-amazon.com/images/I/617KKIRJfeL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by L***R on October 2, 2016* I like this a lot, the included components are of exceptional quality. We wanted to add a third hydroponics system and decided to buy rather than build this time around. The square buckets allow you to pack them close together if you're growing smaller plants. We fit all 8 in a 2 x 4 ft grow tent and could grow 4 lettuce per bucket, which is enough to meet the daily salad needs of the family of 5. We're currently using ours for Cilantro, Tomatillos, Jalapenos and Egg plants with Tomatoes and salad greens in their own systems. Our tomatoes are in a DIY version of this and it works well but to be frank we didn't save enough going that way for it to be worthwhile and the 5 gallon buckets with net pot lids though great do not allow you to grow at as high a density in terms of plants per square foot. We love the controller and reservoir that comes as part of this system. They make a huge difference once the plants get bigger and allow us to go on vacation without worrying about the plants running out of water or nutrient. By the by this is a hybrid NFT-deep culture system providing the benefits of both. If you have the clearance recommend raising the buckets and controller/resevoir off the floor the height of a 5 gallon bucket plus 3" to simplify draining the system at the end of a grow or whenever you might need to. It's worth noting you can expand this system from 8 to 12 buckets. I' m sure this would work very well for smaller plants but would not recommend it for larger, nutrient hungry plants like Tomatoes without upgrading the nutrient circulation because the plants at the end of the line will likely receive water completely stripped of nutrient by the plants earlier in the line.We see a hint of this in both of our 8 bucket, air pump driven, circulating systems. A small electric pump replacement for the airlift fixes this but is only necessary when you have mature (4' plus high) tomatoes plants in all 8 buckets with lighting tailored to support maximum growth. We disconnect the air lift from the 1/2" tubing in the controller and add a $20-$30, 100-120 gallon per hour Eco+ pump and the problem is fixed in literally 5 mins. Ours is located in the basement inside a grow tent. We use a small fan to keep air moving and have experienced no moisture or mold issues. We're based in the Great Lakes and have cold winters. Our biggest problem is lack of pollinators. We have to do it all by hand and use a combination of paint brush and stem shaking to achieve high pollination rates. This is by far the most labor intensive chore associated with using this hydroponics system. About 30 mins per day at the height of flowering. If that sounds like more work than you want to deal with I wouldn't recommend trying anything that relies on pollination to produce what you want and recommend you check out a flood table-lettuce raft system which will cost considerably less and produce amazing lettuces ready to eat in 5 to 6 weeks. A 2x4 foot raft system can meet the lettuce requirements for a family of 4. This can also be a great option if you love to cook with fresh herbs. Would we buy another Waterfarm? Yes, without hesitation. Do we need to? No, one of these systems provides a lot of hydroponic growing space and I suspect would meet the needs of the average family of 4 looking to hydroponics to supplement their grocery purchases. Imagine 4 Tomatoe plants and 4 pepper or egg plants in a space 2'x16' or 4'x8' with no deer, yellow jacket, ant, racoon or rabbit damage. We have Tomatoes that are 7' high covered in perfect fruit. The kids pick them fresh off the vine at will. If this is what you're aiming for this s Waterfarm system can deliver it. ### ⭐⭐⭐⭐ Great product but need to be inspected before shipped! *by A***R on November 26, 2015* This would have received 5 stars across the board if it weren't for the fact that 30% of the predrilled holes weren't there! I'm sure this could have been avoided if it were a little more carefully inspected when packaged. I'm not ultimately worried about it as I have the tools to properly drill and insert 1/2" rubber grommets that I did have to pick up from my local hydro shop ($12 for 24 grommets, not a big deal!). Outside of an hour or two of my time picking up the new grommets and centering and drilling the holes properly everything seemed to be in tact and how it should be. If it works anything like their individual Waterfarm buckets that I'm currently running 4 of and having phenomenal success with I don't think I'll be displeased once I run this system. Will be making a purchase of 3-5 more in the next 30 days if all goes well, I would just rather not have to drill another 25-35 holes and run the risk of causing a bucket to leak if not done well enough! ### ⭐⭐⭐⭐⭐ Mega mini Hydrophonic system *by R***S on May 19, 2017* Well I'm gonna rate this product 5 stars even though my experience was not great. Why? There was so many missing parts, that was my problem. Other then that little "big" deal, this is realy a very high quality hydroponic system! In fact it's a mega growing mini indoor farm! My problem taken care of by Amazon as always! "I don't know if parts were lost in shipping or at the essembly location" --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nz/products/17132526-general-hydroponics-gh4720-farm-controller-terra-cotta](https://www.desertcart.nz/products/17132526-general-hydroponics-gh4720-farm-controller-terra-cotta) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-08-26*