Downsizing my opaeula hobby to 2 tanks: 18-gallon & 1.5-gallon. Keeping the 2 that require the least amount of maintenance. The 18 seems crowded, but the opae seem to be fine. I’ve seen a couple of berried females, although they don’t show up in the short video below.
These remaining two tanks are healthy and require very little maintenance. I haven’t done water changes in years. I seldom need to top-off (both are hooded) and salt creep is not a problem. I’ve never had to clean the glass for the 1.5. I haven’t cleaned the 18 glass in over a year. This tank gets a lot of sun, so I may need to do a cleaning of the front panel glass when it gets too overgrown.
I’ve never fed the 1.5. Since combining the 10 and 18 colonies, I’ve been dropping tiny pieces cut from a dime-sized algae chip into the 18 once a week. I don’t think this is necessary since the algae growth in the tank is robust, but they seem to like it.
The 18 is filled to the 10-gallon level to prevent salt creep, and this arrangement seems to be working fine. For the 18, I run the UGF pump for a few hours each day. The 1.5 is still using the Aqualifter system, which runs 24/7 with a very light flow. I may need to clean the tubes when they become clogged, but they’ve been fine so far.