The Advanced Floriculture range can be used in any growing medium: soil, coco or hydro. Use PRE for 2 weeks during the later vegetative growth stages, leaving a week before you switch to a 12/12 flowering cycle. For example, if you're vegging for 4 weeks, use PRE for the 2nd and 3rd week, then stop using it for the 4th week. You can then switch to using ULTRA as you begin flowering.
Application rates vary depending on the system and growing method. Feed charts can be found in pdf format under the attachments tab.
Where this product fits in with Advanced Floriculture's main boosters:
PRE - weeks 2 and 3 of a 4 week grow stage
ORGANIC SWEET - from week 2 of the grow stage, finishing before the final flush
ULTRA - weeks 1 to 2 of the flowering stages
PHAT - weeks 2 to 4 of the flowering stages
PK - week 5 of flower
OOZE - from week 5 of flower, up to and including the final flush
FINAL - used during the last two weeks, up to and including the flush
Because Bloom products are mostly formulated from organic sources, there can often be variation in colour and consistency. This is nothing to worry about and you can rest-assured that every batch is checked by the Advanced Floriculture quality control team before leaving their factory.