hey could do with some help! using nft. got air stone in tank. ec of fert an water about1.3. ph about 6. clones, rooted and placed on tank in 12/12 then topped. problem is leafs are lightening and yellowing then burnin. seems to be happenin at top of plant an workin down. have been sprayin with nitrozyme but have stopped this now. plants have been on tank 1 week now?????? roots seem to be developing, new growth can be witnessed but seems to have stopped