vertex has stopped making ballasts? wow, I didn't know that. It would be a shame if MH were to die out because equipment stopped being available. It's a tried, tested and true method.
I've sometimes wondered if I could tweak my radion program to make it more hospitable to the LPS that hate them, but since my tank is 95% SPS that seem to be doing fine (though some of the colour issues that you described are definitely happening in my tank as well) I'm too freaked out to tweak things in a way that might harm them.
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