white fuzzy deposits on LR

terryd

New Member
Can anybody tell me what this is? I'm thinking its calcium carbonate deposits. Recently my kalkwasser dosing system malfunctioned and overdosed my aquarium. Shortly thereafter these deposits appeared and are still spreading! They are not living and I can blow them off with a blast of water.
How can I get rid of them? Do I have to take the rock out and wash it off? I'm afraid it's going to keep getting worse. Been going on now for two weeks.
Any ideas?
Thanks!
 
Top