I really fancy getting some of these little blighters for tank maintenance. During the day aerating the gravel and cleaning plant roots and at night cleaning the tank and foliage.
BUT I have been advised that I will either be over run with them, or they will breed and die messing up my water.

Would be interested to hear any thoughts

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"Life is mostly froth and bubble, Two things stand like stone,
Kindness in another’s trouble, Courage in your own”