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I have a Cooltube currently running a 400w HPS, and want to upgrade to either 600w or 1000w. If I get a new ballast and bulb, will the same cooltube work or would I need 1 specifically for that ballast? Picture of cooltube fixture rating for reference. Pretty sure it would but want to make sure...

I have 12% food grade and do about 30 mls per ~10gal. Once every res change in a stinkbud system. When I did bubbleponics in single site 5 gal container, did 3% solution from store and did about 1-1/3 bottles per 5 gals per change. Both worked/working okay, they both demanded different amounts...

Cool. Thanks man. Looking forward to the new design.

For the return lines, how important is it to use 3" vs 2" PVC piping? Been looking and fine tuning my plan, and I could save some cash be reducing to 2" return lines. However people have 3" is the way to go to avoid root clogging the lines. How big of a problem is it?

Following. This thread has given me some good ideas. Thanks guys.hals

You're probably right. However I used two part powder formula my first two grows, but I know maxigrow was not part part of it. Damned if I can remember, didn't keep a diary other than what I needed and you know, the usual, too many bong hits. Hell, maybe it was 1 part, bloom all the way. Lol.

Marijuana. Lol, sorry. Couldn't help but be a smart ass. Not really seeing what you are concerned about though. My new grow after 10 yr hiatus I probably made every newb mistake in the book, and they recovered and are doing fine. I really thought they were goners. Yours looks fine to me, but...

I was following lucas formula, and the bloom and micro provide all the nutrients necessary without the gro for all stages. Just trying to keep it as simple as possible. I may have totally misread the whole concept though, albeit it worked.

I've used maxibloom and micro successfully on 2 dwc grows. I've been on a 10 year hiatus, but now using them again but with a different setup.

Kind of similar to what I was thinking. Did you even bother with the sprayers or just drill some holes?

Thanks for all the replies. I got some time to really refine the plan as I just did 12/12 switch on the current rails. But definitely doing a new design. Heck, the design and build is half the fun anyways.

In middle of a low pressure aero rail grow, and am not happy with the rail design and res being in the tent. Thinking about incorporating RDWC waterfall design, but instead of water just falling into the buckets and recirculating back constantly with the roots constantly in water, I'd make more...

I'm very interested in this. I have (1) 400w now, and was thinking about adding a 2nd. Looking forward to your results.