Are Large Water Changes Killing Fish? Small vs Large Water Changes -

[Richard203]

whats another good way to remove nitrate? I keep changing water but my nitrate always goes up to 40ppm in a week. I only feed my fish 1 shrimp a day and only 1 fish in a 125gal tank. with 2 110aquaclear and 1 fx6

 

[Hendre]

Plants and algae scrubbers. You can grow pothos in the aquaclear filters

 

[Richard203]

whats another good way to remove nitrate? I keep changing water but my nitrate always goes up to 40ppm in a week. I only feed my fish 1 shrimp a day and only 1 fish in a 125gal tank. with 2 110aquaclear and 1 fx6

Plants and algae scrubbers. You can grow pothos in the aquaclear filters

algea scrubber is expensive like $170?

 

[justarn]

Sorry I didn't read the entire thread...
Agree with big WC myself, I do 80% plus weekly on my 300, like S skjl47 said it's really bad if you start doing them instantly, for example you have been doing 20% a month then suddenly do 80% in one go, you will massively shock the fish ph, nitrate, shock is my understanding.
If you start 80% changes stick to them weekly minimum, if you slack of for a month gradually ease back in.

 

[Fish Tank Travis]

Here are some pictures from this week’s water change:

 

[giar]

If the pH strait from the tap starts of lower and then increases to a higher pH after sitting in a cup or bucket after a day, then water contained CO2 from the tap.

It could exit the tap at pH 6.2 and increase to pH 7.2 after a day or it could exit the tap at pH 7.6 and increase to pH 8.2 after a day. Either way, it increases.

If it does this let me know.

If the tap water contains co2, do we need to fill the tank slowly?

 

[Rocksor]

If the tap water contains co2, do we need to fill the tank slowly?

Make sure that the nozzle is not submerged under water when refilling the tank. As the water flies through the air, and splashes into the tank, the excess CO2 will be removed.

 

[giar]

Make sure that the nozzle is not submerged under water when refilling the tank. As the water flies through the air, and splashes into the tank, the excess CO2 will be removed.

I add the new water to the top filter, not directly to the tank. Perhaps it is not necessary for me to fill the water slowly anymore?

 

[giar]

I was under the impresion that my tap contains so little to no oxygen. So i decided to fill the water from the top filter and slowly. The water comes out from the top filter makes a hard waterfall. It splashes much better than from the hose.

Ive been fillin 50% of my tank (285 gal tank) around 6 hours.. because i dont really understand the side effect of co2 to my fishes so ive been doin it thr way i think it is safe.

So now i wonder is it necessary for me to fill the tank up to 6 hours? If i open full the valve it will only take me 1 hour max fo fill 50% water

The tank have an overflow connected to the backyard, part of my autodrip setup

 

[Rocksor]

I think you can open the valve full as long as the water is splashing into the tank.