30 days for coraline growth

Coralline always seems to start on the equipment and grow fastest on the equipment. It likes plastic better than anything else, it seems. My overflow box and powerheads barely have any black color to them at all anymore, they are so purple. I wish my rocks got covered that quickly!

it's been just the opposite for me. it's growing like crazy on the rocks. even the bare lace rock that i put in a few months ago is getting some on it. but i only have a few pea size specs on the glass, and none on any equipment.
 
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