Hi, hope you don't mind me joining this section of the forum. I set up a FOWLR tank for a pair of puffers who are being homed with me and currently in full marine, a reef tank was never the intention. Three weeks on I have good coralline algae growth on the live rock and it is teeming with hitchhikers such as tube worms and bristle worms. There is a red mushroom coral that's grown well over these three weeks as well, it's now nearly 1" in diameter and showing the central dimple and striation. There are other growths which look more like coral than algae to me but I cannot ID them. It's a 130 litre tank with 7 kg live rock, 6 kg dry rock which is being colonised by all the organisms in there now, and coral sand substrate. I will be upgrading to better than double as the puffers grow, this is a starter tank for them as they're only little at the moment. I don't have a sump or refugium, currently running a mechanical filter that would do double the tank capacity in freshwater and agitates the surface. I packed it out with ceramic media as well. There is also a smaller sprayer type filter contributing to flow and aeration. I will get a hang on skimmer if need be and don't mind water changes when needed, I actually enjoy the maintenance and have a good source for seawater. As I have coral that clearly wants to be there I'm keen to keep it healthy and encourage it to spread, maybe even to try introducing other types that don't need UV light or something else I'm not equipped to provide. Any advice? Thank you!