lol, looks like your guys poted at the same time as me...yea i wouldnt mix diff strains in the same container like loc nar said, diff schedules, requirements, etc. but as for amount of solution per plant...one gallon per works for me, altho i know some strains really suck up the water. but i also grow small plants (3 feet tops) i have a small cab in the attic so height is an issue for me. that is the main reason i use the lucas method...it keeps the a lil stunted. heat is also an issue to me which is why i grow with fluro...which reminds me i have to make a post about that...happy growing imp: