Who Gives A Fish Forums

I'm planning to get some dwarf seahorses soon for my first saltwater tank. I'd really appreciate it if someone could share a guide on cycling a tank - I've got a good grasp on their care, but I'm looking for advice on setting up a 5-gallon tank for 4 seahorses. I'm thinking if they breed, I can give ...

Cotton-like growths, possibly eggs - hard to tell from the pic.

Doesn't seem like it's alk burn to me.