i have already been using sunshine mix for professionals which seems to have time released ferts inside. i seemed to have some burning in the beginning but seems mostly ok now (some bad leaves here or there but it might be because i had too much direct ventilation) if the plants take 4 months from seed to finish will i have a problem with flushing if using clones it might take 3 months start to finish should i avoid using this in the future this stuff costs 10.00 for 1.5 cubic feet as apposed to 18.00 for same size fox farms organic