Are they good? i have a 250L aquarium ,need to get a diffuser..
for example will this regulator work and have a good diffusion?
http://www.ebay.com/itm/Haxgon-larg...996?pt=LH_DefaultDomain_0&hash=item3a5a042fd4
for example will this regulator work and have a good diffusion?
http://www.ebay.com/itm/Haxgon-larg...996?pt=LH_DefaultDomain_0&hash=item3a5a042fd4