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This house that am residing in currently has CO2 fluctuating daily from 500 at the lowest up to 1200!! Averaging out around 800-900 most of the time. Doing D2W/ HPA , 8x8 , but have only occupied the corner 4x4 using 55 gallon root chamber with 15 ladies. Irrigation in 35gal res. which feeds...

Does anyone know a simple reaction, nothing precise but there has to be some household item which turns blue or maybe even using pH or something please!! Am in quick need of something can use for one last measure of caution,you know, "-just in case shit's too small to be seen,beneath stays...

have to power 2 315w lec's 220v and additional 24A of led's. plus couple more 220v pumps, fans, etc. This has 5 banks, 2 220v with 4 outlets each, with 40A breaker per bank, then a dual, and Quad 120v with 60A for quad and 40A for dual. and an autopilot timer for the trigger cable. there's...

Besides the up n coming mechatronix pin fin giant cylindrical heatsinks, do any of these designs look adequate to passively cool an 100w Luna100? Am really liking these black ones. They are easily 90% lighter than an equal sized aluminum heatsink. I can get some aluminum that are approx...

please help! couple girls not looking good. planning to desoil in mild tobacco tea water then repot using growstone gs-2 and coco mix that's been hydrated with B.T.. However, seeing as how stressed out they already are, does anyone suggest attacking first to diminish population enough for...

In an 8' x 8' tent, am trying to decide b/t dual growers choice 630w DE or go the 315w dual? Have 2400 watts white cob's ranging from 3000-5000k too! Am in the process of upgrading power supplies. Currently, haha, they're receiving less than 500mA which's probably more than enough but these...