Thank you for all the ideas. I may need to add a new bloodline. And the substrate was very disturbed and there is some potting soil, so ammonia could play a part. I use just dechlorinated tap water and no C02 or ferts. I'm thinking they'll be more comfortable when I get some Fissidins in there as they have been moss less for quite a while. I didn't think to feed bloodworms. I have to get some for my new GBR in the other tank.