Fox Farm Feed Chart – Soil Trio Doses, EC and pH
FoxFarm's own published soil schedule for the Trio of Grow Big, Big Bloom and Tiger Bloom, with the boosters. Week by week, in millilitres per 4 litres of water.
- All dosesper 4 litres
- pH5.6 – 6.8
- Base feedBig Bloom, Grow Big, Tiger Bloom
Every figure is per 4 litres of water. Divide by four for a 1-litre jug, or multiply by two and a half for a 10-litre can: Big Bloom at 15ml becomes 37.5ml. Open Sesame, Beastie Bloomz and Cha Ching are powders and are weighed in grams.
Getting it right
- Never mix the concentrates together. FoxFarm's rule: water in first, then each product on its own.
- Feed up to twice a week. That is the limit FoxFarm print across the top of the chart.
- Big Bloom runs every week. 30ml per 4 litres from Cutting 1 to Grow 3, then 15ml from Grow 4 to Flower 8.
- Grow Big starts at Grow 2. 5ml at Grow 2, 10ml from Grow 3 to Flower 4, 5ml at Flower 5, then it stops.
- Tiger Bloom takes over in flower. 5ml from Flower 1 to Flower 3, 10ml from Flower 4 to Flower 7, and 5ml at Flower 8.
- SledgeHammer is a separate watering. FoxFarm schedule it three times: between Grow 4 and Flower 1, between Flower 3 and Flower 4, and between Flower 6 and Flower 7. Use 10ml in 4 litres of water with nothing else in the can. It clears built-up salts and unused nutrients from the soil.
- The three powders follow one another. Open Sesame is 1.5g from Grow 4 to Flower 2. Beastie Bloomz is 1.5g at Flower 3 and Flower 4. Cha Ching is 1g from Flower 5 to Flower 8.
- Boomerang, Kangaroots and Microbe Brew work the root zone. Boomerang is 5ml from Cutting 1 to Flower 3. Kangaroots is 2.5ml at Cutting 1, then 5ml at Grow 1, Grow 2, Grow 4 and Flower 2. Microbe Brew is 5ml at Grow 2, Grow 3, Flower 1, Flower 3 and Flower 5.
- Four rows come from FoxFarm's wider range. Cultivation Nation Cal-Mag (5ml, Grow 2 to Flower 5), Wholly Mackerel (2.5ml, Cutting 1 to Grow 4), Kelp Me Kelp You (5ml, Grow 3 to Flower 5) and Bembé (15ml, Flower 4 to Flower 8). We don't stock these four, so they are not in the grid below.
- Longer run? Repeat a week. For a longer veg, repeat Grow 4. For a longer flowering, repeat Flower 8.
- Keep pH between 5.6 and 6.8. FoxFarm also print an EC range for each week, from 1.0–1.2 for cuttings to a peak of 3.4–3.8 at Flower 4.
Everything on the chart
Big Bloom
From £29.95
15–30ml, every week
Grow Big
From £18.95
5–10ml, Grow 2 to Flower 5
Tiger Bloom
From £21.95
5–10ml, Flower 1 to Flower 8
Boomerang
From £20.95
5ml, Cutting 1 to Flower 3
Kangaroots
From £24.95
2.5–5ml, Cutting 1 to Flower 2
Microbe Brew
From £29.95
5ml, Grow 2 to Flower 5
Open Sesame
From £24.95
1.5g, Grow 4 to Flower 2
Beastie Bloomz
From £23.99
1.5g, Flower 3 and Flower 4
Cha Ching
From £24.49
1g, Flower 5 to Flower 8
SledgeHammer
From £23.95
10ml, three separate waterings
Common questions
Is this per litre or per 4 litres?
Per 4 litres. Big Bloom at 15ml means 15ml in 4 litres of water, about 3.75ml in a 1-litre jug, or 37.5ml in a 10-litre can.
Does SledgeHammer go in with the feed?
No. FoxFarm give it as a watering on its own, three times through the run, at 10ml in 4 litres of water.
Can I use this chart for hydroponics?
No. FoxFarm publish a separate hydroponic schedule that uses Grow Big Hydroponic in place of Grow Big. This one is for soil.
Do I need everything on the chart?
No. Grow Big, Big Bloom and Tiger Bloom are the feed. The boosters and the three powders are add-ons, each with its own weeks on the chart.
Why does the chart restart at 1 when flowering starts?
FoxFarm number their weeks 1 to 12 straight through, with flowering under 12 hours of light from week 5. Weeks 1 to 4 are Grow 1 to Grow 4 on the chart, and weeks 5 to 12 are Flower 1 to Flower 8. Seedlings and cuttings are Cutting 1.
Figures as published by FoxFarm on their own soil feeding schedule, foxfarm.com. Always read the label on the bottle you own. FoxFarm is a trade mark of its owner.