
Anyway, so here I have two tanks and a stand for a pittance, but the thing is that they were absolutely COATED with horrible nasty green and black algae and/or whatever other crud it was. I've scrubbed and scrubbed with vinegar and water for hours. They now look basically clean. But:
QUESTION: should I keep scrubbing and cleaning until every last (visible) trace of algae is gone? Or is a tiny bit of scum here and there likely to do no harm in a crabitat? Just wondering how OCD I need to be for crab health.
P.S. The 30g breeder is only 18 inches tall, so I was thinking of putting another tank over part of the top to add height so I can have 12 inches of substrate the big guys need. What size would be best for this purpose, and how do people who have done this secure the top tank so that it does not fall off??? I have cats!
P.P.S. I'm sad that my big guys will have to downsize from their 90g to this, but thinking of connecting the two tanks with a "habitrail" kind of connection so they won't be stuck in way tinier quarters, at least. I need to find a DIY thread with that kind of thing in it--does anybody have one handy?