Advanced Nutrients FAQ's
pH Perfect is a base-nutrient mix written to pull the solution into a workable pH range and hold it there, so you are not correcting it all day. In practice you reach for pH Up or Down less often, especially in the first days after a mix. It does not replace a pH meter — you still need to know what the reservoir is doing, particularly on a recirculating system.
Both target the same flowering window; the mix is written for different media. Coco binds calcium and magnesium and releases nutrients differently from inert hydroponic media, so the Coco bottle accounts for that. Running the standard bottle in coco is not a disaster, but you are more likely to hit a calcium shortfall partway through flower.
No — not as a pair you must buy. Big Bud pushes phosphorus and potassium at the plant during flower; Bud Candy is a carbohydrate bottle that feeds beneficial microbes in the root zone. Plenty of growers run both. Putting every additive in at full dose from the start is how you waste money, so add one, then judge the result.
Reach for it when a plant is visibly struggling — deficiency symptoms, transplant shock or stress damage. Revive is a corrective, not a bottle on a standard feed chart. Find the cause first: if the problem is pH lockout, overwatering or root disease, Revive will not fix it until that underlying issue is dealt with. Sold in 500mL and 1L.
Pick from 500mL, 1L and 4L in the pH Perfect 3-Part kit. The 500mL set is enough for a small tent over a full cycle, and it is the cheapest way to test whether the range suits you. Step up to the 4L only if you feed continuously — that size is genuine commercial volume, and concentrates do not get better with age.