beautiful man, Im really considering rdwc, do you use buckets or tubs?
Funny you said that! Its a cross with SPG x RKS.i can hit .9 + on my single light (600w) in organic peat base water only/teas. dunno why i cant do it as easily in my three light tent.
nice pics dumbledore, whatcha got there looks like a large SPG or something, dynamite? j/w
hahaha i know that fucker. used to run the dynamite. good smoke. would love to have an spg like that tho shes a beauty. whats rks?
GPW is between about .7 or 1.5 lbs per 1k. Had bad runs and some bumper crops.
Just dismantled my DIY RDWC as it had gotten the rot. That'll be your biggest threat. I will be redesigning my system to incorporate a fast undercurrent. Most DIYs I've seen are top fed w 3/4" returns, which doesnt provide a high enough flow back to the res. And put too much on the top feed and she'll overflow buckets. Oh yeah, you'll need a chiller too.
My new design will be hard plumbed with 4" PVC returns and serious a external pump. Submersable pumps can heat up the res and deplete iron and you cant properly incorporate the undercurrent. I will be using large plastic tubs, probably around 15 gal, with netpots filled w hydroton.
But if you want simple and you want big plants. check out an ebb bucket system. A quality turnkey system will set ya back about 6 bills. Unless you know how to build a controller, a DIY will still cost a bit. Get the biggest buckets you can find, 5 gallon is ideal. This is a super simple system to set up and operate. Unlike RDWC you only have one hose to each bucket makin your tent much neater and easier to get around. And only the res needs an airstone. Biggest problem you may encounter is a pump for the return plugs and you'll get standing water in the buckets. So I put two pumps in the controller, which is where the return pump is. Also, not all manufacturers have = products so do some research.
Finally, I have couple hybrid/experimentals going. One that you may want to consider is this:
5 gallon buckets filled w hyroton, w small hole drilled in bottom. That sits in another 5 gal bucket w a 3/4" barb attached. Took OSB and covered w poly as a lid for the 4x4 res. I has about a 16"x16" hinged section for access. I have 4 of these buckets that sit on a 4x4 res, which around 16" high. I have a big pump that top feeds each bucket. The 3/4" poly returns simple drain right into res that they sit on. I have really fast flow from the large pump, which run continously. Its all gravity so the biggest issue is the head space. The shorter the res the better. Also, you dont need the buckets sitting on res, just the barbs and returns need to be at least as high as the res.
Thanks for the advice, money isn't an issue, but i cant order a UC system without compromising my anonymity, building something is better imo, cause tweaking and adjusting the system to my ever changing needs will be required. i'd like to see your system once its finished, I may borrow some ideas. stay safe.
You lose power for any length of time in RDWC and you're screwed. What I'm gonna go w is a simple gravity system with the buckets above the res. And a pump to top feed. No timer, and if you lose power you simply pour nute solution over the top by hand a couple times per day.
I thought that was RDWC? I've been running the same type of system. I've had +5 hour power outages without problems.
I had an issue in RDWC when I lost power because the roots sat in non-oxygenated water since the air pump lost power. In most RDWC the buckets are not above the res and w/o some sort of water movement/air pump rot can set in pretty quick.
Now I have 5 gallon buckets full of hydroton, they sit in 5 gal buckets above the res. These are not net pots, the entire 5 gal is full of hydroton with holes drilled in bottom sitting in another 5 gal bucket w drain to res. Theyre top fed, so even if i lose power I can just pour solution over the top a couple times and it'll just drain back to res. I need only do that every few hours or so and they do just fine.
So far, I like this better than any other system I've tried. The only down side I anticipate is the 5 gals of hydroton per plant I'll have to clean.
Ohh so the hydroton bucket normally has water flowering through it, but not submerged in water, it sounds like. Cool setup. 5 gals of hydroton... I know your pain hehe, just from 6" net pots. How many plants per light? Horizontal or vertical? 600s or 1000s?
I'm a lazy unskilled grower and my setups have changed and changed without getting them dialed.... generally things have varied between .35-.8gpw in terms of 2 month cycle. My last was about 0.7gpw with a two plant 3000w vertical tree grow... very similar to the system Heath had in his tree grow thread. Now it's expanded to four plants same wattage... I'll try posting a grow diary if/when it's dialed in and worth posting about! (note: 600w 12sqft dedicated to veg)
With RDWC I'd recommend the same thing (though I haven't done this personally) during pump failure or power outage, as pouring water into the plant buckets will reciruclate the water while also oxygenating from the waterfall effect done manually.