What's your water temp and tell us more about co2 ?

CO2 should be used at a temp of around 90 degrees to work well. It must fill the room to about 1500 and then the whole room flushed with fresh air every 4 hours. Then repeat.

When doing hydro the biggest problem is keeping your water temps down to near 70 degrees.

To me it looks like not enough moving air in your room and the light is almost burning them from heat.

If this room is in a house where people live please be very carefull with co2. It is heavier than air and can flood a whole house and kill everyone inside.

Co2 really only helps take a week off of your harvest time. If you just need a trickle to get co2 levels back to a little better than normal because you don't have a good source of air then it's the stuff.
LOC NAR on probation Reviewed by LOC NAR on probation on . curling leaves I am using an Ebb and flow system I have twelve plants connected currently in veg mode. I am using a 1000 wat metal halide daylight bulb. and the pH is 5.9 and the EC is 1.7. I am using two large fans and the light is being vented outside. I am using a CO2 tank and I think the level is below 2000PPM and above 1000PPM. I also have fresh air coming in most days. My problem is that a few of the plants have leaves that are canoeing and I dont know why. check out the pics for a better look Rating: 5