I have a 20-gallon nano tank I have 2 ocellaris and a firefish I recently scrubbed my rock for algae and it hasn't grow back I was wondering if this could mean my tank is ready for some hardy corals I've had the tank for around 3.5 months had the algae outbreaks diatoms, cyano, hair algae so I'm positive that was the ugly stage and not it looks a lot better and I've heard Coraline algae can sometimes take a long time even after its ready for corals so i was going to introduce coraline this week via live rock and see if it starts to bloom I was wondering how long it takes for it to start spreading and I was wondering if it's ready for some hardy corals. I was wondering when it would be ready for LPS I was thinking I could try them like 2-4 weeks after my first corals is that a good time? Its been cycled for like 2 months so I'm wondering if its ready thanks!