yes, bb. sand is just so, dirty.
my flo thing is the hydorFlo brand, not the one that cadlights sells. i used the biggest adapter i think...drop of crazy glue doesnt hurt to keep it tight. i also changed the stock rio+1100 (350 gph) return pump for a maxijet 1200 (300 gph)...why? 350gph is too much. the overflow cant handle it...microbubbles and noise. plus the skimmer is compromised as well, better to skim the same water over and over then dump it back into the tank. did i mention the rio pos is loud?
the tank runs much smoother now, no water noise, no bubbles, no loud pump, skimmer skims...in the end its a very quiet tank now because of this one $19.99 mod.
6025 tunze powerheads are on a 15 minute oscillating cycle, so only one is on at a time, not too much flow. when i set the tank up, it only took on 16.25 gallons of water to fill it, display and sump, with no rock. i used six and a half 2.5 gallon distilled water jugs from safeway. so that leaves me with 900 gph of flow in a 16.25 gallon tank...55X flow.
anyway, i would get a couple, or at least one of the tunzes....i also use a neptune controller jr to handle all the pumps as well as lights, heater, sunset/sunrise, moon phase...follows seasonal temps and daylight hours in the tropics and will control lights and heater/chiller to follow the seasonal variations, neato!!
the skimmer is an aquaC remora with maxijet 1200 pump. it works great. another option is the tunze skimmer or maybe even the sapphire aquatics.
im still messing with mine too, set it up last week. i had the rock curing in another tank for two months. so from here on out its plug and play for me.
jd