Which pump or powerhead?

I am here trying to figure what type of water mover to move up to for my planted tank. I am running a hydro 400 rated at 115 gph right now. It was great when I didnt have a filter, heater, and co2 inline between input and output . I have also gone up to 6 inches of lift.
I dont mind the "psht" of a bubble hitting an impeller. It is very reassuring to know its going without checking the bubble counter.

A very new developement is a rattle in impeller once in a while. Its like a bubble hits and it takes 20 seconds to get that bubble thru the impeller. Or the constant shock of the bubbles has made a little wear and the impeller can be throw out of wack. The pump is only 3 months old. I miss the higher flow like I had before the addons.

The price of a penguin 1140 looks real nice. It moves 300 gallon per hour and I would be happy with 100-150. It would be easily adapt to my system. Can CO2 consistantly be run thru its impeller without alot of extra wear? Can the unit provide the lift the 6 inches up to my filter? Overheating? Better suggestions? Thanks

Nice davidtcb1, I might. Not to replace mine but move more water.

I found out what my noise is from. The water that runs thru my pump runs by the shaft first. I changed the angle reciently and now I changed it back. The water is used to cool the shaft and the co2 gets caught. I need to find a pump that doesnt cool with the same water as is being pumped. I think that penguin might do that? Or I could just use what I got.

This apparatus hooks to the back of the tank. My water is only 12 inches deep and I dont want extra surface action. I would be replacing the pump with a powerhead but use it as a pump. A penguin 1140 would easily go in with some pvc and aquamend. That input for air would be covered up by the attachment of the line. I dont know how adding co2 after the pump would be with the high pressure.

I just like the availability of the penguin and the price. I want about 100-130 gallon per hour but my 115 gph is probably around 40 gph now. Most pumps will not go in easy or are far too large of a volume for my 29 gallon with 16 gallons in it. My ottos like the current. My configuration works great but pressure is now low. I dont have a rattle anymore. Its amazing how a couple degrees on tilt caused that rattle.

Will a penguin 1140 work continuous duty with the extra stain of pumping pressure?
Anyone know of an more appropriate pump? Thanks