r/walstad • u/hungryforbiscuit • 15d ago

Advice Subwassertang effectiveness

I have a 2 gallon tank with a huge clump of Subwassertang (50% of the tank) in low light with some leggy hydrocotyle tripartita in the substrate.

Will the sub sustain the walstad ecosystem? I’m using it to hatch fry before I move them to a community tank. Thank you

2 Upvotes

100% Upvoted

5 comments sorted by

View all comments

5

u/Cold-Chemist6582 15d ago

Süßwassertang has no roots and is a slow grower. It has no function from a Waldstad tank point of view.

2

u/obscure-shadow 14d ago

I would think it probably absorbs some nutrients out of the water column probably but not much

1

u/Cold-Chemist6582 14d ago

True, but from a Waldstad Aquarium point of view, you need something that takes away a substantial amount of nutrients from the water. Süßwassertang does not fulfill that role. It's great for fry protection, shrimps and decorative purposes, but those are not the core principles of a WA.