That's an awsome layout, wish I had the bucks. Trays must be ebb and flow.

Don't get the hanna combo meter it may work but can be a bitch if things go wrong. Calibration is an ongoing thing with them. Bluelab is what I wanted and should of gotten.

Remember c02 must be at high levels unless you use it for control of something like bugs. Get the meters don't guess. It would go great with a 1000 HPS. It is very dangerous if used in people living areas. It is heavier than air and will displace the air and drowned you.