03-29-2008, 05:07 PM
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I have thought of doing that myself, I think a bookshelf full of fish tanks would look awesome. and with the close proximity and thanks to gravity you could intergrade them into one filtration system. It would just take some engineering, the system would have to be 100 percent reliable or you might end up with 30 gallons in one 10 gallon tank.
Not to offend, but I have to say I disagree with herefishy. Thats a good point to consider, don't put all your eggs in one basket right, however, how are three ten gallon tanks that share the same water different, in that respect, from one thirty gallon tank? if you only have one thirty gallon tank and sickness breaks out than the whole system is sick, same story. So I don't think (note the word choice, this is just my opinion) combining 3 10 gallon tanks is any more dangerous than having one 30 gallon tank.
I'm not sure I would drill the glass, Glass is difficult to drill. you will need a drill bit for glass available at any hardware, then drill slowly, and pour water over it as you drill to keep the glass cool. you will be lucky if the glass cracks less than half of the time.
Maybe some combination of siphons and pumps would be better.