is feeding 2x/week ok for the fish?...
I think so. I've historically fed that much in nanos without issue. I used to supplement every few days with pellets, but it's time to go lean until algae is under control.
Just because the fish look hungry doesn't mean they're starving! I've always had fat and healthy fish. If they start to look skinny, I know that's a problem.
I think part of the problem I have is portion control per feeding, so I've started thawing even my small dime-sized pieces of mysis and feeding half of it every other day, instead of feeding a larger amount less frequently.
Here's an interesting thread on feeding, and good advice:
"As much as will fit in each fish's mouth. Every fish has to fill his mouth daily as a baseline of what he should eat. Meat, however, is more 'nutrition dense' than algae, so allow the 'green' eaters about 3x that. That's a rough indication. But also check how much is falling down to be eating by the CUC, who also need to eat. If THEY are leaving food more than a minute---you're overfeeding."
I should feed more, and I think I will, but I think I'll reduce the quantity each time. Should I feed the fish as often as possible? Yes. If my tank is green and I start to dislike the hobby, is it better for my fish than feeding them less than I'd like to (but not letting them starve or go hungry)? No.
It's all a delicate balance, and daily feedings of frozen food has been leading to more bubble algae growth, which is taking over my tank and making me enjoy the hobby less, so hopefully that calms down and I can get back to enjoying the tank more.
I wonder if I could pay a tank maintenance person to come over and manually remove all of the bubble algae, and then hopefully it won't grow back with all the emeralds and nutrient control? Thoughts?