Ya this 50-60 L/minute are not quiet can’t sleep next to one That’s for sure but their not bad IMO those that @Tommy_McCain show is almost the exact same one but it’s and AQUA AIR IIRCC May be the same manufacturer
I have the splitter that comes with them I think mine has manifold for like 8-10 air lines I only run 4 total 2 in each buck one in the bag and one out and can do 10 gallons easily heavy agitation 40-50$ maybe