ISN Nutrients

9 products

Showing 1 - 9 of 9 products

Showing 1 - 9 of 9 products
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ISN Nutrients Supreme Bloom - A&B (2 x 1, 5 or 20L)ISN Nutrients Supreme Bloom - A&B (2 x 1, 5 or 20L)
ISN Nutrients Supreme Bloom - A&B (2 x 1, 5 or 20L)
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ISN Nutrients Supreme Grow - A&B (2 x 1, 5 or 20L)ISN Nutrients Supreme Grow - A&B (2 x 1, 5 or 20L)
ISN Nutrients Supreme Grow - A&B (2 x 1, 5 or 20L)
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ISN Nutrients Starter Pack
ISN Nutrients Starter Pack
Sale price$175.05 Regular price$189.95
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ISN Fulvic Max (1, 5 or 20L)ISN Fulvic Max (1, 5 or 20L)
ISN Fulvic Max (1, 5 or 20L)
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ISN Microbe Boost (1, 5 or 20L)ISN Microbe Boost (1, 5 or 20L)
ISN Microbe Boost (1, 5 or 20L)
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ISN Solid'as Potash (1, 5 or 20L)ISN Solid'as Potash (1, 5 or 20L)
ISN Solid'as Potash (1, 5 or 20L)
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ISN Amino Gold (1, 5 or 20L)ISN Amino Gold (1, 5 or 20L)
ISN Amino Gold (1, 5 or 20L)
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ISN Rejuvenator Premium Cal Mag
ISN Rejuvenator Premium Cal Mag
Sale price$30.85 Regular price$34.95
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ISN Seaweed (1, 5 or 20L)ISN Seaweed (1, 5 or 20L)
ISN Seaweed (1, 5 or 20L)
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A complete programme, entirely in stock

ISN fills an entire feed chart from one brand: a stage-split base, plus an additive for each job growers usually buy from three other lines. All nine products are buyable right now — a schedule you can finish is more useful than a better-known one with bottles you cannot get.

Base nutrients

Supreme Grow A&B and Supreme Bloom A&B each come as a two-part set in 2x1L, 2x5L and 2x20L. Use Grow through veg and Bloom through flower — the usual stage split, priced well under the imported brands.

The additives

Amino Gold. Amino acids in a bottle, sized 1L to 20L.

Fulvic Max. A fulvic-acid carrier that helps nutrients move into the plant, in 1L, 5L and 20L.

Microbe Boost. Beneficial microbes for the root zone — the biology in the programme — 1L to 20L. Wider choice sits in Microbes & Beneficial Bacteria.

Solid'as Potash. Flowering-window potassium, 1L to 20L.

Seaweed. A marine extract aimed at vigour and stress tolerance, 1L to 20L.

Rejuvenator Premium Cal Mag. Calcium and magnesium for coco and for soft water.

Starting out

The ISN Starter Pack bundles the range into a single purchase — the sensible place to start, because it answers which additive pairs with which stage and costs less than the bottles bought one at a time. Once the tank is mixed, set the reading with pH up and down and check it on a pH meter.

ISN Nutrients FAQ's

Yes. Supreme Grow A&B and Supreme Bloom A&B handle base nutrition through veg and flower, and the six additives cover aminos, fulvics, microbes, potassium, seaweed and cal-mag. One brand can take a crop from start to finish, which is not something every line this size can say.

Most bottles are 1L, 5L or 20L. The A&B bases are sold as matched pairs — 2x1L, 2x5L and 2x20L. The same schedule then covers a single tent and a commercial room; you only change how much you buy, not what you mix.

Yes if you have not used the brand before. It puts the range in one order, costs less than buying the bottles one by one, and answers which additive belongs at which stage. Buy separately later, once you know which parts of the schedule your garden actually uses.

Fulvic acid works as a carrier, so nutrients move into the plant more easily. It sits beside a base feed rather than replacing anything. On its own it rarely shows a dramatic visible change; its job is uptake across the whole schedule. Sold in 1L, 5L and 20L.

In coco, almost certainly — coco binds calcium and magnesium, so a base nutrient on its own usually leaves plants short. Soft or filtered water is the same case. In soil with hard tap water you may not need it at all. Add it because the plant is asking, not as a default bottle.

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