Originally Posted by Sai Sauce
I don't test hardness, is that recommended? And I do water change sometimes like around once a month
Using My iPad and I Love Fishes! <~8~>
You should be doing a weekly partial water change for the health of your plants and fish. I would start with that and see if the deformed leaves stop. If they don't, then you might want to test your water hardness.
The amount of your weekly water change should depend on your stocking level. You can use Aqadvisor website as a good starting point and then adjust the amount as necessary depending on your nitrate levels.
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