Hi, Thanks for all the great replies to my ich problem.I'm going to start on a cure tommarow.I have a 20 fulresent bulb and my tank is 12 inches deep.If the bulb burns out I'm wondering if somebody could give me some advice on buy a good,yet enxpensive bulb thats 20 watts or more.Also thanks again on all the great replies to the ich question. Anthony Inzero dread49 at mail_idt.net in cool Rhode Island