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676 Posts
Hi,
I have a few questions for you. Are you feeding them worms or dry flake food? Do you use co2? You had ich, are you introducing new fish to the tank without quarantine? Do you know why you had ich? Are you changing water or performing routine maintenance? Do you know the KH and GH of the aquarium? Crushed shell does not sound like good substrate for angelfish because of bad parameters it will cause. Are the plants growing well?
I would try to focus on angelfish only providing them a tank by themselves...without shark or gourami. Check on the GH/KH parameters. Swapping out substrate (if it is crushed shells) will help.
I have a few questions for you. Are you feeding them worms or dry flake food? Do you use co2? You had ich, are you introducing new fish to the tank without quarantine? Do you know why you had ich? Are you changing water or performing routine maintenance? Do you know the KH and GH of the aquarium? Crushed shell does not sound like good substrate for angelfish because of bad parameters it will cause. Are the plants growing well?
I would try to focus on angelfish only providing them a tank by themselves...without shark or gourami. Check on the GH/KH parameters. Swapping out substrate (if it is crushed shells) will help.