Re: [Killietalk] Drilling 10 gallon tanks: some are tempered glass !

[BrandtEdL at aol_com]

Hi All.  I'm not familiar with aquariums with holes drilled into the  bottom 
of them.  Is this for filtration or change of water in a tank;  etc. ?   Never 
dealt with it because I've always had few tanks  after the mid 70's.  Ed 
Brandt
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