Are you growing in soil or hydro???
i also grow in fox farm, ocean forest to be exact, and my P.H. is always anywhere from 5.9 to 6.9 and i use advanced nutrients sensi grow and bloom a&b and i have never hade any problems.
most people say 5.8 is where u wanna be at with nutes, but my ph is almost always at 6.0-6.5 and i have hade no problems what so every.
the best thing to do is just try it whatever your p.h. is at now at check ur plants closely for any signs of stress or burn or whatever.
hope this helps dude.
thats the exact dirt im using and i just put the babies under my 1000 watt mh bulb about 7 feet away. i have a simple ph tester right now and i dnt even know how to use it i put the dirt in the tube and then put a couple drops on the dirt and its suppose to turn a color to be able to determine the ph but im not seein it? anyone used it b4
I'm pretty sure what you have there is meant to test water Ph, which is ok. What you need to do is to collect some of the runoff from when you water your plants, you know the stuff that seeps through the little holes, and put that in the vial, add the drops, then compare it to the colors on the bottle. You can also buy a very simple soil Ph tester for about 20 bucks, if you are buying the FF soil and nutes from a brick and mortar place it's pretty much a guarantee they sell them.
anyone heard of an icebox if so r they useful
Where are you venting your air? From what I know the icebox cools the air as your fan passes it along to your exhaust duct, which I would think is only necessary if you are venting direct outdoors to mask IR signature. Someone with more experience can correct me if I am wrong, but insulated ducting should be enough to keep the room from getting too hot. I personally don't use one as my room is in an insulated basement with no windows and I exhaust into a crawlspace under another part of the house. By the time my exhaust hits the outside the temp should be low enough that there is no obvious heat signature. I hope. Depending on your situation you might want to forgo the ice box and invest in a carbon filter for your inline fan to cut down on odors.