Cheap Refugium

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Wonderpus
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So I'm trying to set up a cheap refugium. I am planning on having 2 syphons so that I don't have to buy a pump. So from tank to refugium and then refugium to wet/dry filter. The only think is that the 10gal tank has one of those reptile thermometer stickers, which is on the inside of the tank (I originally thought it was on the outside). The corner of one end is beginning to peel. I filled the tank with water and waited a couple of days to see if there was any copper, which there wasn't. So do you guys think it will be ok to hook it up to my octo tank?
 

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Joe-Ceph

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First: if your "tank" has a reptile thermometer sticker on the inside, then it is probably a glass reptile cage, which is NOT an aquarium. Glass The glass used on glass reptile cages is thin and can't handle the weight and pressure that water puts on it. Check to see if the glass in your "tank" is as thick as a real aquarium of the same dimensions, and if it's thinner DON'T use it.

In theory the design you propose will work fine, as long as each siphon can keep up with the flow provided by your return pump. You are letting gravity get your water to its lowest point, and using a single return pump to get it back to the top - so no problem.

That being said, I don't trust siphon type overflows. If bubbles gather in your siphon tube, or your siphon stops working for any other reason, then you will have an overflow, and your pump will run dry. With two siphons you are doubling the chances of having this kind of problem. I would play it safe by drilling each tank, and using overflows that don't depend on a siphon. If you have downstairs neighbors, a flood of only a few gallons could cause $2000 or more in damage to their ceiling. If a small flood is no big deal for you, then go for it. Otherwise, I don't recommend that you take the chance with siphons, but that's me.
 

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No it is a fish tank, but was used to house a reptile. Hmmmm this is a good point. Well I think I'll give it a go and look for pumps a bit later. My only other worry is that the adhesive would get into the water and hurt the octopus. Is this possible?
 

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I'm thinking it won't make any difference/impact but what do you guys think?
 

Shrimpy Brains

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Not sure about where you are, but around here you can get a 10g tank for $13 at Wal-mart. Not alot of money for piece of mind!
 

DWhatley

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I hate to do this to you but I vote with Joe-Ceph on not using a siphon system. We worked and worked and worked to get something reliable (and I saved or final master piece as a reminder in case I EVER consider it again). Siphons fail ... often. The only one that didn't was the reverse siphon we created putting the tube tank together because we failed to put a siphon breaker high enough in the return pipe :heee:. Fortunately that was only a couple of gallons while we were standing there talking and noticed what was happening. So even using a pump, you need to be concerned with siphons during a power outage (fortunately, power outage and tank fill is what we were testing) and be sure there is a hole somewhere in the line that will break a siphon. Additonally, if you have not done this before, be aware that you need to allow enough room above the water line for water to back flow. If you choose to look at a different tank, look for a deal on a 20 (same foot print but taller) for some wiggle room.
 

rryyddeerr

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A siphon feeding a container being drained by ANOTHER siphon IS going to fail and flood. There is no way to keep them both siphoning at the exact same rate. You can get a completely functional diamond-crusted hole saw bit on eBay. They work great and there are several threads and YouTube vids dedicated to their successful employment. Drill it, get some bulkheads and you'll be in business with no worries.
 

SabrinaR

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How does one know if the glass is tempered or not?
 

Joe-Ceph

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I've never heard of the glass on the sides of a tank being tempered, but the bottom is sometimes. At least for windows, tempered glass is marked with a "T" or the word "Tempered" in the corner, which may or may not be true for aquarium bottoms, so if it is marked you know it is tempered. If not, you don't know, so either call the manufacturer and ask, or take a chance. For what you are doing, you'll be grinding holes in the side, so don't worry about it.
 

DWhatley

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Since I have never attempted this with glass, the only reference is the antecdotal comments from my not so local LSF. They drill tanks often and successfully drilled Puddles 10 year old framed 65 tank for us (that I was almost sure was not going to withstand the drilling since the manufacturer did some odd things to create two other holes). The only tank his dad (the one that does the drilling) won't touch is a standard 55. Their antecdotal experience with this size has led them to believe that this partiular mass manufactured tank uses tempered all around and is likely manufactured in primarily one facitilty.
 

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