X Nutrients - Bloom FX - Quart

What Sits Inside a Bloom FX Quart

This is a supplement rather than a feed, and the distinction matters before the first dose goes in. The guaranteed analysis is 0.3-0.8-2, so nitrogen is almost absent and the weight sits on phosphorus and potassium. X Nutrients describe it as concentrated liquid phosphorus and potassium formulated for immediate root uptake. The base is inorganic, which is worth knowing up front because it is not OMRI listed and will not fit a certified organic programme. A quart holds 946 mL of concentrate. At the label rate of 15 mL a gallon that yields about 63 gallons of mixed solution. Walk the rate up to its ceiling and the same bottle covers roughly 31 gallons instead. It goes into soil, coco, soilless mixes and recirculating reservoirs without any change in method. The manufacturer is specific about one thing: never premix it with another concentrate, and add it straight to the reservoir instead. Adjust pH after everything else is already in the tank. Anything mixed and not used gets discarded rather than held over.

Running This Bloom Booster Through a Flowering Cycle

Timing is the whole game with a product like this one. It contributes almost nothing during vegetative growth, so the bottle stays shut until the plants have flipped and set flower sites. From there the general rate holds steady every time you water or every time the reservoir is refilled. The advanced programme ramps instead, climbing five millilitres a gallon each week of bloom until it reaches its top rate at finish, then stopping. That ramp is where a meter earns its place. Phosphorus and potassium both carry electrical conductivity, so a climbing dose raises solution strength week over week, planned or not. Read EC or PPM before the tank goes out, not after the plants tell you. X Nutrients also recommend draining and replacing reservoir solution weekly, which keeps the accumulation honest. It stacks with the rest of the line, sitting alongside the Bloom and Micro Nutrients in the same tank. The honest limit is that a flowering additive cannot rescue a weak base feed. Pushing the rate on plants already short of nitrogen makes things worse rather than better.

Key Features

• Guaranteed analysis: 0.3-0.8-2, so the load is phosphorus and potassium rather than nitrogen
• Bottle volume: 946 mL, which is about 63 gallons of solution at the general rate
• General rate: 15 mL a gallon, in the reservoir or at every watering
• Advanced rate: Step up five millilitres a gallon each week of bloom, to 30 mL at finish
• Media: Soil, coco, soilless mixes and recirculating hydroponic systems all work
• Mixing: Add straight to the reservoir, never premixed with another concentrate
• pH: Set pH last, after every other product is already in the tank
• Base: Inorganic, so it is not OMRI listed and not for certified organic work

Technical Specifications