I'd contact one of our resident aeration experts. I'm certainly not one but from what little I know linear pumps don't put out much PSI. That means that you are limited as to how much air flow will be achieved at a 10 foot depth. There are many variables in aeration systems including the types of diffusers used, the placement of diffusers (depth and location in the pond), duration that the system is run per day, etc, etc.

A properly designed system can be a great tool in the pond management arsenal. A poorly designed or implemented system can yield disaster.

Lets try to get you some more feedback.

Aeration experts????

JHAP
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"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)