Hi Laura, I'm not an expert on water features and have had my mistakes in building them. I'm sure someone will come up with a cool idea to help.
I understand your attachment to the whites since I have 4 too.
Its bad enough that I had to go to the pet store before work this morning and find a way to help one that we see is missing his ability to get above the old light fixture and sleep. (they moved last weekend into a new enclosure) He was looking so sad :-(
Hope his new cork round is high enough for him to feel more at home.
What if you did something like the filter system from this pic in a lower sided tank/dish/Bowl?
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