Shirt, old paper towel laying next to water barrel, what ever is handy. Just make sure it's clean when you put it away. I think the most important thing is to not go crazy trying to get it prefect. Calibrating everytime you use it is a bit extensive. Trust the law of averages and your equipment and it will come out fine.
skeeter
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skeeter - It is easier to ask for forgiveness than premission. My motto to my wife.
Current Tank Info: 75rr,6"dsb,refugium,auto top-off & semi-auto water changer, OM squirt. 4 MJs 1200, Started on 03/03/06
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