Eheim Thermofilter

T

toofazt

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May 31, 2005
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I have the Eheim Pro II Thermofilter 2126. This is the freshwater model. My qustion is, can I put aquarium salt in my tank (1tsp every 10gal)? I would guess not because since this is the freshwater model and not the saltwater model so I'm guessing the heater element will rust with the use of salt... I wish I would have thought of this before buying this filter :( If anyone has this filter and has used aquarium salt with no ill effects please respond. Thanks
 
I wouldn't think it would hurt it. the heating element better be sealed in glass or something.. mainly because an exposedd one would bleed electricity and be deadly... not to mention that it would still rust in freshwater. Plus its my understanding its not a good idea to let any metal contact your aquarium water for prolonged period of time.

I tried to find some info about filter but the ehiem website doesn't have any info about that model. Just to make sure I suggest you email them.

http://www.eheim.com/email.html
 
No problem!

Hey, Eheim is a Quality company, don't get all weirded out about a teaspoon of salt/10 gallons!

That is a great filter. Calm down, you are fine to use low levels of salt.

BUT, you need to be aware of salt creep. That is, you add 1 teaspoon per 10 gallons. Over the week the tank evaporates 1/2". Now you do a water change. How much salt do you add back?

If you took out 10 gallons, you'd add 1 teaspoon to the replacement water only. But how much water did you take out? If you put back in 10 gallons, you'd think you need to add 1 teaspoon, but remember that evaporation? Evaporation leaves it's salt behind, so the salt that was actually removed and thus needs replacing is the volume of water you removed, NOT the volume you replaced.

If you make this small mistake, every week, the salt level creeps up. Over a year or two, it gets considerable. Two or three solutions, either pay attention to the actual replacement volume, replace evaporation water with distilled water before a water change, or get a salt test kit and use it every 6 months or so, or just do a huge water change (75 or 80%)on occasion to clean out any excess.

Next, it may be that you don't actually need to add salt. Some people think it is not necessary.
 
maaltan said:
I wouldn't think it would hurt it. the heating element better be sealed in glass or something.. mainly because an exposedd one would bleed electricity and be deadly... not to mention that it would still rust in freshwater. Plus its my understanding its not a good idea to let any metal contact your aquarium water for prolonged period of time.http://www.eheim.com/email.html
Click to expand...

The element is encased in what looks like aluminum. It looks like one of those water heater elements you can buy in a travel store and drop in a cup to heat water for tea. No problems with rust, ever. I've had mine for 2 years and it is fine.
 
anonapersona said:
The element is encased in what looks like aluminum. It looks like one of those water heater elements you can buy in a travel store and drop in a cup to heat water for tea. No problems with rust, ever. I've had mine for 2 years and it is fine.
Click to expand...

those would be stainless steel ..at least last one i saw. no problem with rust as long as the water is oxygenated counterintuitively. Im fuzzy on the finer points but stainless steel has nickel and other metals added which does something with the electon valences which causes oxygen to bond and then be released or something thereby no rust (iron oxides). no oxygen and that same pairing causes the alloy to corrode. I saw that on some shipwreck salvage misson on discovery.

in simple terms .. i wouldn't let the sump sit for long periods of time (like half a century) with stagnent water in it :). but im sure by then we will be using psionic filtration which allows the genetically engineered fish adjust thier own water quality.
 
not stainless steel

I doubt that it is stainless steel, not shiny, and aluminum is a better conductor I think.
 
If my fish get any type of disease or open wounds, aquarium salt helps them recover.
 
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