Originally Posted by FishinRod
"Two is one. One is none."

Especially when you are on the road, away from any place, maybe after hours and have live critters on board that depend on you to breathe. You only have about 1/2 hr to fix the problem or they are dead.

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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).