I dont think they do. oahu fire might be your best bet.
but you should check out aquascapes just bcause. great selection of "stuff." the owner jojo, is the only guy there, that "truely" knows his plants. something to keep in mind if you want to chit chat about planted tanks. best to catch him on an off day (non peak hours), otherwise he is usually busy with customers and/or friends.
p.s. those blue chaulk dots on your rocks look familiar...lol. i bought a ton of rocks from that store too, last year.
So you mean I got your leftovers?? hahaha
So I called Aquascapes and I guess I was wrong. They "generally" don't fill CO2 tanks. I tried to call Oahu Fire but they were closed already. Guess I'll try again tomorrow. Any other ideas? I refuse to go to Gaspro.