We also had alot of red slime in our tank we used this product and it worked perfectly. Here is the name of the product and its use and explanation of the product.
Good Luck
:joy:
you can also find more information on this site simply search it
by typing red slime
Hope this helps.
Ultralife 'Red Slime Remover'
Don't Let ugly Red Slime destroy the beauty and delicate balance of your aquarium. Now you can finally remove that unsightly red algae quickly without harm to fish, invertebrates, corals or reef inhabitants. Simple add 'Red Slime Remover' and watch the brilliant colors come back to your aquarium as the Red Slime disappears. Truly a product you should not be without.