my 625 gallon DIY plywood aquarium build

  • We are currently upgrading MFK. thanks! -neo
I need to post the latest picture. at the moment I am putting water in it to clean it out. I am not going to fill it vary full yet but am at the point ware I can start filling it.

For adding salt following the instructions on the back does not work when I am not sure how much water I am taking out and putting back in. at this point I think I am going to just keep the level at 1000 PPM so I know there is salt in it and not too much.

My goal for today is to get the under gravel heater in, under gravel filters in, the gravel, enough water for some foam filters, and put in some guppies and blood fin tetra. I will be getting some more plants tomorrow. I have a 220gal tank that I will be pumping the water out of to fill the tank.
 
Dont put gravel in yet imo...if there is a leak that needs fixed ur settin urself up for a mess... cant really leak test unless its full as the pressure will be stronger giving you a "true" test. Id let it run for a good week before adding anything to make sure she holds.

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i need to see pics of this asap, im very intrigued by this tank!
 
deluther said:
No, as stated in the article you linked to:



So, they don't directly measure salts or anything else for that matter, just conductivity. When you add a salt to water it hydrolyzes and releases ions into the water that affect the conductivity.

Also from your link:



Any type of filtration that would remove ions that affect conductivity would also remove the aquarium salt ions.

I cant believe we are discussing tds meters when talking about aquarium salt. Way overkill. Just follow the instructions on the box of salt and use common sense. If you change some water, just add enough salt for the water added back. Don't forget to compensate for evaporation if any. I usually just add salt the first time and don't add any during weekly water changes. You only need salt for about 10 days. The most important thing to do is to do something soon. Ich can kill if left untreated. Good luck, jon!
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As the article pointed out, conductivity is affected by many substances in the water, NOT just salt.

I don't think Purigen and Hypersorb use charged ions. Thus, if I apply an RODI system along with these high quality filter materials, I may or may not be able to eliminate most of the other substances that affect conductivity. My intention was not to solve this ridden right here in this board - it was just a thought. But pointing out that a TDS Meter does NOT exclusively measure salt is an important point that I made both for now and for future readers.
 
It has a little over 200 gallons in it. I have a bunch of guppies and blood fin tetra in it. I need to get more bricks and work on smoothing out the liner so I can work on the filter system. I need to add one more support under the floor before filling it much more. It is still a work in progress. It still needs a lot more work.
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Gotta love 3M! Frame looks strong! How are you smoothing the liner out??? It looks like a PITA to me.


Desdinova, I think maybe you are confusing the term "salt" with regular table/aquarium salt (NaCl). The many substances you speak of: sodium, magnesium, calcium, chloride, bicarbonate, etc. enter the water as water soluble salts. For example, calcium carbonate (think limestone) is the salt that is picked up from the earths crust that makes water "hard".
 
I did not make much progress today. But it is supposed to be nicer tomorrow.
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deluther said:
Gotta love 3M! Frame looks strong! How are you smoothing the liner out??? It looks like a PITA to me.


Desdinova, I think maybe you are confusing the term "salt" with regular table/aquarium salt (NaCl). The many substances you speak of: sodium, magnesium, calcium, chloride, bicarbonate, etc. enter the water as water soluble salts. For example, calcium carbonate (think limestone) is the salt that is picked up from the earths crust that makes water "hard".
Click to expand...

I am hoping that the water will smooth the liner out as I fill it, then I will trim the excess (that's why it looks so bulky, there is a lot of extra material there.)

The tank is about half full.
 
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