Chemiclean will work, but think of it only as a tool. You can use it to regain control but you must make changes to reduce nutrients. If your tank just cycled; however, I would not use any type of red slime remover as this is normal for your tank to go through various ugly stages as it matures.
1. Do a large (50%) water change, then follow weekly (10%-20%) water changes
2. If using filter pads, must change them weekly. Don't try to clean them, change them.
3. A phosphate reactor did wonders for my tank
4. Use RODI
water, distilled can be used, but RODI
is best. What water are you using BTW?
5. Are you running a skimmer?