I am getting ready to switch my 70g to a 90g. My 70g is 2yrs old.
My new 90 will sit in the exact place of the exsisting 70g. So I have to first move the 70g and then put the 90g in it's place. I am thinking of using a spear 60g for the switch, my thought is to siphon water from the 70g to the...