During the time that I couldn't access the API, I had disabled a couple of low trade volume coins because I was concerned about having a large volume to trade.
I was worried about low trade volume thing. If someone knows the coins you have in your mining list and they mean to do your pool harm they could buy up a bunch of low volume coin so the price goes up and your pool will automatically start mining it and you wont be able to sell at the price that it was propped up to because its so low volume.