Bloom Yellow Bottles FAQ's
Grow A&B through the vegetative stage and Flower A&B through flowering is the standard pairing. Euro A&B is an alternative base formulation for growers who prefer it. All three are two-part, meaning you add A and B separately and never mix them undiluted, which keeps incompatible elements apart until they hit the water.
No, and running them all is the most common mistake with a range this deep. Around fifteen supplements exist so you can tune a feed precisely, not because every garden needs every bottle. Start with a base plus a root product and one flowering additive, judge the result over a full cycle, then add another. Watch your EC as you stack them.
Most of the range comes in 300mL, 1L and 2.5L, with Pre, Florigen and Phat also available in 15L. The 300mL bottles are the sensible way to trial additives on a wide range like this — you find out what works without committing to litres. Scale up only the products that earn their place.
All three are marine-derived but do different jobs: Seaweed and Seafuel are extract-based inputs aimed at plant vigour and stress tolerance, while Sea Minerals supplies trace elements from a marine source. They are complementary rather than interchangeable, though most growers pick one rather than running all three alongside a full additive schedule.
At the end of the cycle, as the name suggests. Final is the finishing product in the Bloom range, run in the closing stage when the aim shifts from bulking to finishing the crop cleanly. It comes in 300mL, 1L and 2.5L. Follow the brand's schedule for when to introduce it rather than treating it as a plain-water flush substitute.