cleaning coraline

pascal32

New member
last night I used a razor blade to scrape the upper 1/3rd of the back glass which is encrusted with coralline - all the debris was sucked up with a python.

I love the clean look and would like to do the rest of the back, but can't reach with the hose. is there any risk to scraping and letting float in the water column?
 
i did this when my tank was fairly new and it all landed on my rocks. Now my rocks are fully encrusted :) but i went back to a pink, purple and green wall.
 
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