Re: hair algae on driftwood
A good tank tear down can help, but not if you do not get at the real issue, likely a CO2 related one.
The hair algaes tend to never be an issue in any that I've run well and had good CO2.
Once they infest, they are tough to get rid of without such methods.
Some folks bomb with excel etc.
I'm not too sure there is a good record there.
I can say the same for a blackout.
The wood can easily be removed, bleached, dechlorinated and returned.
Add plants to the wood and add Amano shrimp, they keep wood clean.
Regards,
Tom Barr