i grow in 3 gallon buckets full of perlite. get a plastic mop bucket or waste bucket ,can't be clear,.(walmart has 2 and 3 gallon ones for $2) put a 7/16 hole(about the size of a pencil) in it 2 inches from the bottom , fill the bucket with perlite (walmart bag fills a 3 gallon bucket perfect $7)
put your seedling or clone right into it and water it.you can just bury the rockwool starter or peat puck in the perlite(walmart has a humidity dome with 72 peat pucks for $6 it says jiffy on it)..
this is mimicing your roots hitting ground water,its like a soil hydro mix kind of..it so easy to grow this way i will never do soil ever again..
i ph my water to 5.8 but 5.6-6 is good i use low nutes for veg like 200ppm every other water or 2.for flowering 600-800ppm every water..
at first add a cup or 2 of water every day (keeps the top wetter until the roots grow to the bottom) then you can top it off until you get water at the hole 2 inches from the bottom,you can water every day or once a week just don't let the bottom get too dry,its that easy if you want you can easily set this up to feed on a timer from a res.
if you add too much nutes and start seeing nute burn just add a gallon of nuteless water and its fixed..anything else just pm me