Need advice in regards to Ich. I've owned a tank for years and have luckily never had a bout with the ichy stuff. Until now, boo/hoo! I have mollies, platties, neons, 2 kuhli loaches, 2 cory cats, 2 ghost shrimps, 1 otocinclus, 1 clown loach, and 1 dojo loach. I've treated my tank with Mardel...