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Old 09-10-2020, 02:28 AM
Tihsho Tihsho is offline
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Default Re: 4 Foot Vivarium Build From The Ground Up

The perk of the canister is that currently it's a 'free to you' situation which is always good. The canister running dry will inevitably either overheat the motor head or damage the impeller then you have that cost. Overall a sump is just cheaper to repair in the future. With the dimensions of the stand, plus the low flow you're probably after, you're just after a pump that has the head pressure to reach the height of the outlet. As for calculating the volume of water, that's easy. Just go through and measure your calcined area and do the following:

L x W x H = (cubic inches)/231= gallons

ex:
48" x 12" x 6" = 3456 cu in / 231 = 14.96 gallons

Obviously you will have displacement of the calcined media, but if you get that total volume in gallons + what ever your top off reservoir is you should be more than safe. In my example above, that 14.96 gallons + 5 gallon reservoir would be just shy of 20 gallons. So a 20 gallon long should provide more than enough space since the area calculated to be 14.96 gallons will have displacement due to media which will reduce the volume of water. ATO's are pretty reliable these days, so if the mechanical float switch is not giving you the warm and fuzzies, a simple electronic ATO with water level monitoring (around $100) will be more than safe. I've used some simple ones for years with no floods. Only floods I get are when I forget I'm filling a tank and walk away during a water change... Yay fishroom with concrete floors!

I'm not only recommending this to save a pump, but in actuality you're probably going to be away from home at some point. Say a vacation comes up. Having this knocked out now means one less thing you have to worry about/train the pet sitter to do when they swing by. Perk of the ATO res is you can also use it as the same res for your auto misting system. Win Win.

Also, let me add that whatever you're going to stock in there has a chance of producing offspring... Couple breeder boxes in the sump = simple way to raise tads without setting up a rack or table for cups before they sprout front legs.

Last edited by Tihsho; 09-10-2020 at 02:34 AM.
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