new 29g - can I add more stock?

[Traci]

So, I finally bought a new 29g. I am going to combine most of what I have in both my 10gs, but wondered if there'd be any room for more that:

3 crayfish, 3 inches each and the centerpieces of my tank.

5 White Clouds
2 Gold White Clouds
1 Blind Cave Tetra
2 Paradise fish
1 Australian Rainbowfish

I will be using one of the ProQuatics filter that I've had on the 10g. It's supposed to cover up to a 29g, but is rated at 120gph. That seems low to me for a 29g, but for the sake of saving some cash (since I have 2), could I put one Proquatics filter at each end of the tank? I will also have at least 4 lines of tubing leading to airstones (the crays need a lot of oxygenation).

I am not starting out with all new water, since I plan on siphoning the majority of water from both 10g into the 29g and using the established substrate and filter media.

Okay, within all of these parameters, and assuming that I will end up adding about 25% new water to "top off" the 29g, in everyone's esteemed opinion, can more stock be added or no? If anything, I would bring in a couple of friends for the rainbow. I wasn't fully cognizant of the fact that he needed to school.

ETA: this tank is not heated (obviously) and my current guys are all supposed to do well without a heater according to my research. The crays need it lower that 76F.

E again TA: I realize the crays will eat what they can catch. These particular fish have been in the smaller tanks with these same crays for a couple of months and survived!

[The Gipper]

Putting both filters on the 29 would be fine - many use more than one filter on their tanks especially larger tanks. That said, I have but one AquaClear 15 on a 30 and it's enough. But I have lots of live plants and medium level stocking ( 6 white clouds, 3 rasbora, 2 sidhumunki (sp?) loaches, 2 gold rams, 3 amano shrimp)

I'd let things acclimated for at least a few weeks before adding more stock. Yes you coul probably add some more, but I always like to stay on the light side of tank stocking rather than the heavy side. Instead of piling fish into a tank, I usually just start up another if there are other fish I want to keep.

[Traci]

One of the 10g I'm keeping to setup a viquarium. Or, I should say ATTEMPT to set up a viquarium. We'll see how that goes! That will be for another crayfish I have of another species. That will still leave me with an empty 10 gallon, and a little wiggle room.

What is the rule of thumb for filter gph and tanks? I read somewhere that it should be gallonsX5=gph. That's why I was thinking I needed to use both filters.

[stik6shift98]

i think its 7xgallons=gph...not sure...

but yes wait and then add soem more fishies