Ultimate GH Waterfarm Mods

My first grow I used a GH Waterfarm being told that it was simple, adequately efficient and that it works. You can look under my profile to see my very first post as I was having bloom problems...No blooming due to light leaks. Anyways, after I completed that grow, which netted me with a little over 2 oz of sweet Mex dro I took a closer look at my waterfarm to see if I could solve a couple of issues that I was having. These were the issues:

1. I changed my nutes every week according to the GH feeding schedule and in order to do that I had to pick up the first half of the farm and place it into another lower unit while I drained out the old and refilled with the new. I then had to transfer the upper half back to the filled unit. This wasn't soo bad until late in bloom when I had a big f-ing root ball to deal with and a four and a half foot plant stickin out the top. Then it was a big heavy pain in the ass.

2. I had to check the ph every day and balance it as it would swing from about 6.2 when balanced to 7.0 every day. Same issue as above. Had to pick up the top a little and sit it caddy corner on the top rim while I took readings and then balanced the nute solution. I also had to pick up the top half to add more nute water later on in the grow as the plant was a thirsty little lady. Wasn't such a big deal until later in the bloom phase when the plant was friggin gigantic.

Those were the two main issues I had. The third and fourth minor issues I had was the pump that comes with the complete module is only a 1.5L per hour pump. It dripped, but had to work on it and if the reserve got low at all, as it did daily later on in bloom, it didn't really pump very well at all. And the holes in the bottom of the waterfarm didn't allow for enough drainage when the plant was mature as the rootball used most of the holes to grow into the resevoir. I think that with the lack of drainage and the lack of adequate aeration, the solution might not have been kept at peak efficiency.

So, here's what I did to solve these problems and I think that this does a fantastic job of fixing the only real pains of using stand alone waterfarms.

SL731740.jpg..........standard GH Waterfarm bottom
SL731742.jpg..........Modified GH Waterfarm bottom. I drilled out a bunch of holes the same size as the ones that were already drilled in, then I took a smaller drill bit and drilled in between all the bigger holes. The reason I did this was in the standard waterfarm bottom, when filled with a root mass, the water has a doesn't efficiently enough draining back into the resevoir. This should help solve that. Notice the big ass hole drilled in the corner?

SL731743.jpg.........This was so I could put an 8.5" long piece of 1.5" PVC pipe through the water farm. What I did was make an access tube to the resevoir. Now I can take a turkey baster and pull out some nutes to test em and using a funnel, pour solution and anything else I need back into the waterfarm without picking it up. I have just tested this and it works beautifully.
IMAG0114.jpg..........Drilled a 1/4" hole behind the drip ring in order to allow a clear vinyl tube access to the bottom of the bucket. See below
IMAG0115.jpg..........This is the bottom of the bucket. See how the tubing is protected by the drip ring in front. The bottom of the access tube is just sticking below the net pot, but not too far below to impede access to the nute solution.

IMAG0117.jpg.........vinyl tube goes to big ass airstone, which is linked to a 40L per hour pump that drives the drip ring and this stone. The pump runs two of these stand alone waterfarm units and has two extra ports to allow a third. The pump is on a timer and when on; pumps the ring and the stone at the same time. Does a great job of oxygenating the solution while feeding it to the plants and keeps the solution from getting stagnant.
SL731747.jpg.........some solid irrigation action. No puny drips here.
SL731750.jpg..........Drilled a 3/4" hole as close to the bottom as I could and used a thick 3/4" rubber grommet, 3/4" PVC straight barbed male ended connector and a 3/4" PVC on/off valve in order to create a drainage port at the bottom of the waterfarm. Now I can drain the old nutes, flush with clean water and add the new nutes without the hassle listed in issue #1. I'll have these farms sitting on something a couple of inches above the ground to be able to slide a container under the valves. Tested and it works very well.
SL731754.jpg..........this is the airstone used in the bottom of the waterfarm. 8 incher I believe.
SL731745.jpg..........this is what the top of the setup looks like. You have access to the resevoir below without distubing your plan and it all fits together excellently.

Let me know what you think of my mods. Hope you enjoy them and maybe sooner or later General Hydroponics will update their waterfarm using a setup similar to this.
 

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visajoe1

Well-Known Member
It only took 4 years, but you got your first, long over due like on that post JG. Genius mods, I think I'm gonna go for this soon
 

NanoGadget

Well-Known Member
I actually did pretty much all of these mods to mine, but the 3/4 pvc access port is genius. I'll have to make that mod after this run...
 

visajoe1

Well-Known Member
Im going to buy the below and make it a water farm for about $3 additional, hopefully tomorrow if the shop around the corner from me has it. If not, there is 1000 other stores! Great thing about Los Angeles. Has better components, lower profile and larger res. Lower price than GH Water Farm too! I'll post some pics on the transformation. I'm also going to move a clone from a coco pot to this farm, in coco. If all goes well, I have a 2nd one to move too. I'll show that too



https://www.sunlightsupply.com/shop/bycategory/grow-systems-trays-reservoirs/flo-n-gro-gro-momma-bubbler-bucket
 

visajoe1

Well-Known Member
I successfully transferred one clone from coco to the farm. The roots were much smaller than I expected, but this has been the slower growing of the two. I expect the 2nd one to have a larger root system, but still small enough to fit into my hands. Im excited to see the difference between hydro and soil. Coco was only used for about 3 weeks. I'll take some pics of the 2nd bucket when I do that tomorrow now that I know exactly what I need to do
 

visajoe1

Well-Known Member
I transplanted the 2nd clone from coco to its farm bucket (its in the back on the bottom pic). I used a DWC kit (root spa) and bought the GH farm kit for the ring and downstem pieces. Doesnt hurt to have extra air line, grommets, etc from the kit, but they arent needed right now. I went this route because it is shorter than the GH waterfarm (14.5" vs 16.5") and has a larger reservoir bucket (5g vs 4g), and it was cheaper. I got a 4 bucket set and will use the other later on as the cycle continues.

-2 air lines per bucket. 1 line to 8" air stone in bucket, 1 line to waterfarm bubbler stem
-Gently removed as much coco from the roots as I could and placed as low as possible into net pot with single layer of Hydroton on bottom.
-Carefully added Hydroton ensuring plant stayed centered and upright
-If drip ring is too large diameter, cut equal length from both ends. I removed about 1" from each side of it to fit the 8" net pot
-Filled bucket with 3g of 5.8ph at .45 EC


P1280014.JPG P1280015.JPG P1280017.JPG P1280020.JPG P1280021.JPG P1280022.JPG P1280023.JPG P1280024.JPG P1280025.JPG
 

mytwhyt

Well-Known Member
I'll be glad when they find the first part of this thread.... and the pics.. I may have already responded at the beginning of the thread.....
 

Yodaweed

Well-Known Member
Anyone know how difficult it is to pipe together 4 water farms to a rez? Do i need to by the recirculating addon kit?
 

mytwhyt

Well-Known Member
Drill 4 13/16 holes opposite the sight tub holes, these are for water out of each wf.. The sight tube holes become the water supply holes from the reservoir.. From wf to wf... it's all barbs and grommets... You loop the last wf back to the reservoir.... For what happens there my best answer is, google,, Waterfarm pimp Dr Fish
 

visajoe1

Well-Known Member
Drill 4 13/16 holes opposite the sight tub holes, these are for water out of each wf.. The sight tube holes become the water supply holes from the reservoir.. From wf to wf... it's all barbs and grommets... You loop the last wf back to the reservoir.... For what happens there my best answer is, google,, Waterfarm pimp Dr Fish
If they are daisy chained like that, doesnt the first few in line tend to hog nutrients?
 

mytwhyt

Well-Known Member
With a single pumping column in the reservoir, it'lll take 2 hours to move 12 gals through the daisy chained waterfarms... Do you think the plants will take up nutrients that fast??
 

Vegs

Well-Known Member
I am glad I stumbled across this thread when contemplating the purchase of a few single WF units. I now have 5 singles so far and have done all of these mods with a slight variation in the air stone at the bottom (using 6 inch round/flat air stones). Hats off to the author for sharing as it helped to guide me to my recent purchases.
 

Vegs

Well-Known Member
Nice. I am good with my mods as I can slide a tube into my PVC pipe and extract contents fast as well as use that same PVC pipe to add in water and nutes as well take samples. I've seen topics about this years ago and looks really cool but I'm ok with sticking with soil free growing although I missing out on extra flavor.

Great idea once again!
 

Vegs

Well-Known Member
I see you now Dr. Fish and reading your "Mixed Hydro - Water Culture - Coco/Perlite" thread now.
 
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