Product description
Plagron Alga Grow 100 ml – organic grow feed for soil, trial size
Curious whether an algae-based veg feed suits your soil mix? This 100 ml bottle lets you find out without committing to a big can. It is a sample-sized Plagron Alga Grow: an organic base nutrient for the vegetative stage with NPK 4-2-4 plus micronutrients, built on organic nitrogen, amino acids, proteins and marine algae extracts.
How far 100 ml goes
At the standard 4 ml per litre (1:250) this bottle makes about 25 litres of feed water. That is enough for a few weeks of veg on a handful of plants in one small tent, or for a side-by-side test against your current grow feed.
Dosing in practice
With small volumes, eyeballing is where it goes wrong. Use a 5 or 10 ml syringe: 4 ml into a litre jug, 20 ml into a 5 L watering can. Shake the bottle first. On Lightmix you can feed from the first watering; on Growmix wait until week 2. In 100% NATURAL substrates you don't need to correct pH or EC, and a slight smell or haze after mixing is normal.
Specifications
- Volume: 100 ml
- NPK: 4-2-4 + micronutrients
- Phase: vegetative growth
- Medium: all soil mixes, not for hydro
Liked the result? When flowering starts, the next step is Alga Bloom.

