Gas will find an opening without a gap, but the gap would offer more surfacea area for oxygen.
stroppy said:freezing here arctic weather minus 2 celsius thats about 28 fahrenheit and been snowing all day !!!! pond sitting at about 5 celsius some parts of the Uk have temps of minus 18 celsius ...lowest temps ever recorded here for november
I totally AGREE.oldmarine said:Once again I am asking a silly question. Why do we go through all of the expense and trouble to cover our ponds in the winter?
oldmarine said:The proof is in the pudding. Not sure if one would want to do that with a koi. You know how delicate they are.
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