I'd go to 1/2 asap and reduce it down for the gauge if necessary. The less pressure there is on the whole system, the longer the compressor will last, even tho the compressor will be rated for "x" pressure.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).