I find that in my DSB tanks I have zero problems with nuisance algae.
Right now I have 4 tanks running -- 2 DSB, 2 barebottom.
I find that the DSB tanks have zero issues with GHA, and I can go a long time without water changes and have the tanks running fine.
The 2 DSB tanks: 6gallon pico LPS / Softie , 55 gallon that is "gearing up" for a mandarin / pipefish / lps / softie tank, currently running with just LR, Macro, etc. because I am traveling and letting it mature.
Both DSB tanks are skimmerless.
The 32 gallon barebottom tank has a skimmer (remora pro) and a refugium, and is mostly softie and LPS and even though there are no fish in there and I am only feeding the anemones, duncans, and brain a little here and there, I am still dealing with minor annoying GHA issues.
I found the 6gallon pico to be such a "maintenance-free" tank compared to the 32gallon barebottom with skimmer, that I made the 55 gallon to be a skimmerlesss DSB tank.
I find that the DSB tanks (sugar-size aragonite) also maintains my calcium and alk levels very nicely compared to the barebottom tank.
This has all been running 6-8 months. I know there are downsides to DSB's, but it gives a very nice stability to the tanks that it is in.