Right, I've sat and had a good look at the tank, so can give a better update.
I cleaned a load of dead Caulerpa material out (hence it's a bit cloudy right now), 1 small piece of prolifera is actually still hanging on (firm rhizome, green leaves) along with 2 or 3 small pieces of taxiflora. The Chaetomorpha appears to be doing well as I stated earlier, I've moved this all to the right of the tank, mainly to remove shade from the rocks directly under the light in order to try to encourage more green algae growth. I'm not convinced the little billed in LED is powerful enough to be honest, so any shade is just making things worst.
I spotted "brown algae" diatoms on some of the rocks and on the sand, as well as what looks like possibly the start of some green thread algae growing on 1 rock. No other signs of algae growth though.
I cleaned a load of dead Caulerpa material out (hence it's a bit cloudy right now), 1 small piece of prolifera is actually still hanging on (firm rhizome, green leaves) along with 2 or 3 small pieces of taxiflora. The Chaetomorpha appears to be doing well as I stated earlier, I've moved this all to the right of the tank, mainly to remove shade from the rocks directly under the light in order to try to encourage more green algae growth. I'm not convinced the little billed in LED is powerful enough to be honest, so any shade is just making things worst.
I spotted "brown algae" diatoms on some of the rocks and on the sand, as well as what looks like possibly the start of some green thread algae growing on 1 rock. No other signs of algae growth though.