I would say 20g long would be perfect for you then.
You could build it into an AIO with an ATO, use one of your MP10s. Bang boom pretty easy to maintain smaller sized reef tank
You could build it into an AIO with an ATO, use one of your MP10s. Bang boom pretty easy to maintain smaller sized reef tank

nitrates looking great. Haven’t tested alk in awhile, 9.9 I’m sure due to the fritz salt. No worries there for me though!