| | Re: alternanthera reineckii died 24 hours after submerged
Welcome to APC! Before I can even guess what might be the problem I need to know more about your entire set-up. First: when you refer to them melting away after "planting", do you mean after flooding the tank? Or, did you replant them when you flooded it? Are you fertilizing the plants? They need to get all of their nutrients from the water, because you have an inert substrate. What is water temperature?