Help please algae issues

[Coralgurl]

2 Power heads are pointed at the surface. I've brushed and removed as much as I can of the algae, vacuumed the sand and basted rocks plus a 25 gl water change done.

Sponges are cleaned each time I clean the canister and are replaced every 3 months. If they need to be replaced more often I'll do so.

The skimmer was dialed in but now have to reset it. I've run tubing into a bucket just in case, the overflow is quite low on this skimmer.

I'll test the water in an hour or so and see what's going on.

Now more reading!

Oh, and because I had the water level so low, noticed I've got tons of green bubble algae. Think I'll be picking up an emerald crab as well. Cleaned out all dead corals and snail shells, one absolutely reeked.