You came to the right forum, many would have said that a Mars hydro would be good on another forum. And while it would "work" you wouldn't be getting much for your money.
Read for a while here on cobs and the quantum boards and you will see the light.
I almost made the same mistake as you...
My tap is 8.4ph and 400 ppm. I ro to 15ppm and add back with the rejection water to ~100ppm, then fertilize and ph to a target ph. All the soil I can buy runs acidic so I compensate.
I consider the run off ph to be the most important measurement and I will always compensate to get it to 6.5...
I couldn't manage without a ph meter. I fed my plants under ph7.5 once and regretted it. I always aim for the runoff to be 6.5. Most of the time I try and creep there. I should take a big whack at it before I put it into flower.
I'm not organic but I'm pretty damn close. I sure as hell am not feeding them a ton of stuff. 400 ppm max after ph correction. Most of the time just ph correction right now.
Correct, you can hook up 2 or 20 cobs up to them,so to say.
Cobs are getting more efficient al the time. When it come time to upgrade I can take cobs from one driver and throw them on an existing fixture, doubling the cobs on it should increase efficiency by about 10%.
Now with an empty...
That had to of been my order lol.
I was expecting to have to chop some males down and that I would be OK for light. Nope, they were all female. I guess a guy could have worse problems. I can't wait to see what they do when I can spread them out and get more intense light over them. The cxms...