Lasting 8-9 months, these little balls will give your plants their fertilising needs. Great for use in hydroponics. NPK of 11-21-9 +6% Mg. Soil Ninja recommends using a maximum dose of 2% slow-release fertliser of the total mixture volume.

 

Size: 100ml Bag

Soil Ninja Slow-Release Fertiliser 100ml

£2.99Price