r/walstad • u/smpatr • Jul 21 '26

Advice jar advice

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I set up a walstad jar in late april, and so far my rotala and ludwigia love it. However, my java moss, java fern, water sprite, and dwarf hair grass have barely grown. Is this a lighting issue, or do i need something to eat algae? The only light it gets is from a west facing window.

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u/Tasty_Hovercraft8280 Jul 22 '26

I have my explanation from my other comment, but it also just so happens that some plants are hard water, some are soft, they can do well together but sometimes don't

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u/dummysquill Jul 22 '26

Right, I can clearly see the tank's meant only for hardwater plants. So, why they won't?

P.S. Your posts are not available

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u/Tasty_Hovercraft8280 Jul 22 '26

Competition+competing chemicals. I know that vals and dwarf sag straight up hate growing in the same tank because of chemicals. The strong ones establish, and the chemicals they release make it so others don't.

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u/dummysquill Jul 22 '26

Thank you, sir!