As part of Saturday's Special Buys, Aldi has 2 litre bottles of "Seaweed Concentrate" on sale for $9.99 each. While it's a safe assumption this is simply Seasol rebranded for Aldi, this is basically confirmed by the lids on these bottles, which are molded with Also… try our PowerFeed Fish Fertiliser on the top of them. PowerFeed is a trademark of Seasol International Pty Ltd… and is their fertiliser product which complements Seasol.
Given 600ml of Seasol at Woolworths on sale for $4.80 was considered a bargain, this stomps all over that given it works out to be 50c per 100ml, whereas the Woolworths deal was 80c per 100ml.
Compost, it's what plants +naturally+ use. The chemical based fertilizers eventually destroy the soil - ie. yes they feed plants but they damage the biomass leading to more disease and more insect pests, which also cost money to 'cure'.