125 gallon tank question

[Jorock6969]

Ok i set up a 125 gallon tank and its empty. I am trying to Dave money and wondering if I can put a cinder block i found outside. I'm going to put some dovii and I don't want them to die. And if there anything else I can put in it will help. Thanks


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[garboy]

i used outdoor pavers in my 75 gal but i soaked them in a bucket for two weeks before adding them. they have been in my tank for 3 years now and havent had any problems

 

[strollo22]

I'd put a clay flower pot instead of a cinder block


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[4wheelvfr]

I'd put a clay flower pot instead of a cinder block


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Much better option and pretty cheap.