bane

Dude , Why isn't my skimmer a good idea ??? (me skimmer idiot) So if lions degrade the water quickly ... how to I rectify it ? Water change frequency/ details ??? (me marine water change idiot 2) Thanks ....

Very new to marine fish. Current have a 4 x 1.5 x 1.5 with a Jebao Filter (1000 L / Hour) and an airstone-driven Protein Skimmer. Intend to keep Lionfish (and maybe a moray). Question : Water change (how often and how ? add fresh water with marine salt ?) Question : Suitable tankmates for lionfishes ? Question : How to feed really young lionfishes (<3") Thanks .