i think my clown loaches have ich...

Go get some Mardel ick remover. Follow the instructions but half the dose. Clown loaches like other loaches and catfish get ich easy. Overmedicating them seems to hurt them. Those types of fish are hard to fix from ick so good luck.
 
turn up the temp. should be atleast 82 if the fish you have can handle it.
 
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