Who Gives A Fish Forums

Another factor could be water parameters. Have you tested for nitrates, phosphates, and potassium? Deficiencies in any of these can stunt growth even with adequate lighting.


Agreed. I'd also suggest testing your GH and KH. Some plants struggle in very soft or hard water. A comprehensive test ...

I've had my tank up and running for a bit now, and I've noticed my duckweed is struggling. It's not just the duckweed, I've lost a few other plants too. The fish seem fine, but the plants just can't seem to make it.