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FloraFlex feeding schedule and calculator

FloraFlex's official Full Tilt and Super Simple programs in all three strengths, scaled to the water you're mixing. Everything is grams per gallon except Root Drip.

Checked Oct 20, 2026 Source: FloraFlex feeding schedules: Full Tilt and Super Simple, without Cal/Mag (floraflex.com)
How to read a feeding chart Schematic of a 12 week feed chart. Each week shows the label dose as a dashed outline, a solid start at 50 percent, and a gold work-up band to 75 percent. Veg weeks 1 to 4, flower 5 to 11, flush week 12. FIG. 01 · READING A FEED CHART SCHEMATIC, NOT A BRAND CHART Label dose, and where to start LABEL 100% WORK UP 75% START 50% 01 02 03 04 05 06 07 08 09 10 11 H₂O 12 VEG · WK 1 TO 4 FLOWER · WK 5 TO 11 FLUSH
01

Mix calculator

Pick a week and how much you're mixing

Many growers here feed below the chart. Start low and raise it only if the plants want more.
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Turn on JavaScript to use the calculator, or read the full schedule below.
02

The full schedule

Grams or mL per gallon of water, as marked, at full strength

Full Tilt, high

Stage Length V1 V2 B1 B2 Bulky B Full Tilt Root Drip EC
Veg weeks 1 to 4 4 weeks 5 g 5 g 1 mL 3.0
Bloom weeks 1 to 5 5 weeks 4 g 4 g 2 g 1 mL 3.0
Bloom week 6 1 week 2 g 2 g 4 g 1 mL 2.0
Bloom week 7 1 week 4 g 1 mL 0.8
Bloom week 8 (flush 2 to 7 days before harvest) 1 week 5 mL

pH 5.5 to 6.5.

Full Tilt, medium

Stage Length V1 V2 B1 B2 Bulky B Full Tilt Root Drip EC
Veg weeks 1 to 4 4 weeks 3.5 g 3.5 g 1 mL 2.1
Bloom weeks 1 to 5 5 weeks 3 g 3 g 1.5 g 1 mL 2.2
Bloom week 6 1 week 1.5 g 1.5 g 3 g 1 mL 1.5
Bloom week 7 1 week 3 g 1 mL 0.6
Bloom week 8 (flush 2 to 7 days before harvest) 1 week 5 mL

pH 5.5 to 6.5.

Full Tilt, low

Stage Length V1 V2 B1 B2 Bulky B Full Tilt Root Drip EC
Veg weeks 1 to 4 4 weeks 2 g 2 g 1 mL 1.2
Bloom weeks 1 to 5 5 weeks 2 g 2 g 1 g 1 mL 1.5
Bloom week 6 1 week 1 g 1 g 2 g 1 mL 1.0
Bloom week 7 1 week 2 g 1 mL 0.4
Bloom week 8 (flush 2 to 7 days before harvest) 1 week 5 mL

pH 5.5 to 6.5.

Super Simple, high

Stage Length V1 V2 B1 B2 EC
Veg weeks 1 to 4 4 weeks 5 g 5 g 3.0
Bloom weeks 1 to 7 7 weeks 5 g 5 g 3.0
Bloom week 8 (flush, plain pH-adjusted water) 1 week

pH 5.5 to 6.5.

Super Simple, medium

Stage Length V1 V2 B1 B2 EC
Veg weeks 1 to 4 4 weeks 3.5 g 3.5 g 2.1
Bloom weeks 1 to 7 7 weeks 3.5 g 3.5 g 2.1
Bloom week 8 (flush, plain pH-adjusted water) 1 week

pH 5.5 to 6.5.

Super Simple, low

Stage Length V1 V2 B1 B2 EC
Veg weeks 1 to 4 4 weeks 2.5 g 2.5 g 1.5
Bloom weeks 1 to 7 7 weeks 2.5 g 2.5 g 1.5
Bloom week 8 (flush, plain pH-adjusted water) 1 week

pH 5.5 to 6.5.

03

Notes from the chart

  • V1, V2, B1, B2, Bulky B and Full Tilt are grams per gallon. Root Drip is mL per gallon.
  • For a longer cycle, FloraFlex says to extend veg week 4 or bloom week 6 (Full Tilt).
  • Raise feed EC if runoff pH climbs more than 0.5 above your input pH; lower it if runoff pH drops more than 0.5 below.
  • Foliar (Full Tilt program): 4 to 5 grams per gallon every 5 to 7 days in veg, and on days 1, 7 and 14 of bloom.
  • These are the versions without Cal/Mag. FloraFlex's high-strength Cal/Mag versions add 2 to 4 mL Cal/Mag per gallon and trim the base powders slightly.

Source: FloraFlex feeding schedules: Full Tilt and Super Simple, without Cal/Mag (floraflex.com)

04

What growers here actually run

From the THCFarmer archive

  • Runs FloraFlex B1 and B2 in flower with silica and cal-mag in RO water, in coco and perlite at pH 6.0 to 6.2 and EC 3.0. Almost a pound a plant.

    Mob_Barley Read the post →

  • FloraFlex at half strength while plants are young, then follow the chart and make small tweaks.

    American_Agriculturist Read the post →

  • Found FloraFlex extremely stable in the reservoir.

    Dirtbag Read the post →
05

Threads worth reading

Discussions this page draws on

06

Go deeper

Learn guides on THCFarmer

07

Common questions

Full Tilt or Super Simple?

Super Simple is two powders per stage: V1 and V2 in veg, B1 and B2 in bloom. Full Tilt adds Bulky B in early bloom and Full Tilt in the last two fed weeks, plus Root Drip throughout. Both come in high, medium and low strengths.

Are FloraFlex amounts in grams?

Yes. V1, V2, B1, B2, Bulky B and Full Tilt are grams per gallon. Root Drip is mL per gallon.

What if I see tip burn?

FloraFlex suggests feeding 20 to 30 percent more volume for 2 to 3 days and/or cutting each input by 0.3 grams per gallon.

Do I need Cal/Mag?

FloraFlex publishes versions with Cal/Mag for soft or RO water. On the high-strength charts, that adds 2 to 4 mL Cal/Mag per gallon through veg and bloom weeks 1 to 5, and trims the base powders slightly.

Still not sure? Ask the growers.

Post your nutrients, how much you're feeding, your medium and a photo. Members who've run FloraFlex will tell you what they'd change.

08

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09

More grow tools

These numbers are starting points, not rules. Strains, water, medium and light all change what a plant wants, so watch your plants and adjust.

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