Hello! I have a 125 gallon stocked with (3) 4 inch oscars, (2) 5 inch balas, A 10 inch RTC, and about a 6 inch TSN and finally a (7) inch gar. I just scrubbed off all my rocks just last week! Now in starting to see more (growth) reappearing. Is this NORMAL for algae growth. Or is there something wrong which I should correct. Thanks