Big Time Zyme Feeding Schedule
About Big Time Hydroponics
Big Time Hydroponics is best known for Big Time Zyme, an enzyme product that breaks down dead root matter and organic debris in the root zone. In a recirculating system that debris is what feeds the pathogens you do not want, so an enzyme is one of the cheapest pieces of insurance you can run.
The rest of the range is the same idea — simple, single-purpose products that keep a system clean rather than trying to be a full nutrient program.
What we stock
Big Time Zyme and the rest of the range in quart, gallon and larger sizes.
How to use it
Big Time Zyme is a system-maintenance line, not a base nutrient, so there is no rising bloom-week curve to chart. The label gives a flat rate you run continuously (Big Time Enzyme) or a spot rate you use as needed (Big Time Exterminator). Both are quoted directly from Big Time's own product pages.
Big Time Enzyme
Breaks down dead root matter and organic debris in the root zone, reservoirs and drip lines, which removes the food source that root-borne pathogens like pythium and fusarium feed on.
Rate: mix 5 mL of Big Time Enzyme per gallon for vegetative and flowering plants, run through week 5–6 of flowering.
Contents per the manufacturer: water, enzymes, citric acid, a plant-oil surfactant (organic coconut, orange, lime, lemon and hemp oils), and under 0.001% potassium sorbate as a stabilizer. Qualifies for FIFRA 25(b) minimum-risk exemption.
Big Time Exterminator
A contact/mechanical-action spray for mites (russet, broad and spider), root aphids, whitefly, fungus gnats, thrips and aphids, and for knocking down powdery mildew, downy mildew and botrytis. It is not systemic — it works by mechanical action on contact, so pests do not build resistance to it.
Foliar spray: 30–175 mL per gallon depending on severity of the infestation.
Spray after sunset or with lights off once room temperature has stabilized; keep the final spray solution
at pH 6.0–7.0. The manufacturer's label allows daily use up to the day of harvest.
Root drench: 5–20 mL per gallon against root aphids and fungus gnats; does not
harm soil microbes.
Russet/broad mite protocol: start at 80 mL per gallon, repeat once daily for
10–14 days, then treat as needed to keep the population down.
25(b) exempt and the manufacturer states it breaks down to inert within 48 hours of application. Big Time Exterminator is registered for use on food, cannabis and hemp crops in several states including Massachusetts.
The rest of the range — Big Time Rinse, Big Time Roots and the CleanGro odor-control line — follows the same single-purpose logic as Enzyme and Exterminator above; ask us for the label on the specific product and size you are running. Figures above as published by Big Time Zyme on its product pages. Usage notes only — always follow the label on the container you actually have.
Questions about dosing for your setup? Call 508-461-5850 and we will walk you through it, or browse the full feeding schedule index for other brands we carry.
Shop Big Time Hydroponics
Everything on this schedule, stocked at Milford and Webster.






