I'm switching to bubble buckets, what is the best air stone to use, or are the rope style better? I have an eco-air 2 pump, output 4.5 l/m per nozzle (2). I have grown hydro drip for a few years, i just used the cheap airstones for my resovoir. I was thing about trying the rope style: http://cgi.ebay.com/Active-Air-4-ft...emQQptZLH_DefaultDomain_0?hash=item2ea9d7502e Hook one nozzle to each end of the diffuser, i bet that would male plenty of bubbles! Any of you experienced bubblers ever try the rope style?