Oh I forgot about the filter. My personal experience with the filter hasn't been good for breeding. The fluval edge I have has water output right at the top so even at the lowest flow it creates a current in the tank. My shrimp only started breeding after I stopped using the filter. Eventually I took it out altogether. For my fluval spec, I didn't install the filter at all. And it cycled much faster than the edge.
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An opae ula walks into a bar and looks at the bartender. The bartender asks, 'What can I get you?' The opae ula says, 'Anything but a cocktail.'