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So I did the first res change of the grow on wednesday, and today when I opened my res, there was a crapload of little brown things floating around in the res (kinda looked like dead skin cells everywhere). And brownish slimey stuff on the walls and covering my water pump and air pump hose. I...

Hey all. I am currently in day 6, started with rooted clones. My ppm was 540 to start and is now 730 from all the ph down I've added. The light is a 1000W hps. Started the light 4 feet above the canopy, and yesterday just lowered it to 3 feet. Now it seems like all the plants have a slight...

So, I am doing flood and drain, and my tray never fully drains itself of water. There is always about a quart of water floating around in puddles near the drain and on the sides of the tray. This water just sits there for hours under my light, is this going to cause algae? Also, my pump is so...

Hi everybody, I set up my flood and drain system, and it floods fine, but when the pump turns off, it takes like an hour and a half to drain fully. I have my table sitting on top of my reservoir, tilted down slightly for drainage, and I have my two fittings in place. Everything is brand new and...

Hey guys, I have finally set up my entire grow room, and once I plugged everything in, the combined sound of my ballasts, fans, air pumps and ac is deafening. Even with the door closed I can hear it 20 feet away, so the neighbors must think a jet engine is next door. I also bought my clones...

Hi everybody! I have a newbie question. On Fox Farm's feeding schedule, it appears they have the math way wrong on ppms. For example, it says to use 3 teaspoons per gallon for the first week, equivalent to 700-840 ppm. Since there are 768 teaspoons in a gallon, we divide 3 by 768, and get...

Hi all, I will be starting a 4000 watt grow in my basement soon, and I am worried I will be drawing too many amps. I had the idea to use 240V cords for the 4 1000's in order to only be using 20 amps total for the lights. I thought perhaps I could have a technician come in and replace two of...