Help, RTMs have cotton like substance on them.

[duanes]

The temp range is good for the fish I see.
The pH and other significant parameters like alkalinity are very low, "probably" because of the tinly water change schedule.
Unless your tap water already has low pH, I would guess acidification, as the tank is taken over with fish urine on the basis os stated 20% water change pr week, leading to stress and causing disease.
Both fish (motaguesea and fronts) do well with a pH above 8.High 7s are OK but 6.5 or below cause stress.
If you are only going to o a 20% water change, it should be every other day.

 

[Rocksor]

Raise the PH with dissolved baking soda. This may allow the issue you are seeing to go away.

i would also get a liquid test kit since test strips are less accurate.

 

[nbarbagallo98]

Ok I’ll try increasing the ph. How much baking soda would be a good dose for a 75gl? Also do you recommend doing one 40% change weekly instead of 20%?

The temp range is good for the fish I see.
The pH and other significant parameters like alkalinity are very low, "probably" because of the tinly water change schedule.
Unless your tap water already has low pH, I would guess acidification, as the tank is taken over with fish urine on the basis os stated 20% water change pr week, leading to stress and causing disease.
Both fish (motaguesea and fronts) do well with a pH above 8.High 7s are OK but 6.5 or below cause stress.
If you are only going to o a 20% water change, it should be every other day.

 

[Rocksor]

Practical Water Chemistry

Practical Water Chemistry by Shelli Wittig (Fishgal) Water chemistry can be a bit daunting to the beginner aquarist; at least it was for me. When I got started in the hobby I was sold a complete test laboratory which included tests for 5 different things. I was diligent about testing and...

www.cichlid-forum.com

 

[aroijuana]

Kanaplex should clear that up unless it's viral as others have said.

 

[Kolton13]

It is a disease with no known medication, if I remember correctly. kno4te

 

[kno4te]

It is a disease with no known medication, if I remember correctly. kno4te

Looks like lymphocystis but will see with updates.

 

[Kolton13]

Looks like lymphocystis but will see with updates.

Yeah it does. Bu isn't there no known cure?

 

[kno4te]

Yeah it does. Bu isn't there no known cure?

If it’s lymphocystis then its a virus so no meds will work. Just wait it out.

 

[Rocksor]

Yeah it does. Bu isn't there no known cure?

Only cure is having the right water parameters so the fish's immune system fights it off. Currently, OP has hard water fish in low ph and soft water (according to the test strips)