ACF Tadpoles Disappearing

[n321]

Sorry, I know I've been posting a lot of questions here...

I have some ACF tadpoles that are disappearing. I had probably 50-100, and now it looks like it's under 20.

I have two questions. First, are these cannibalistic? I know this is a problem with pacman tadpoles...
Two, I used methylene blue to prevent fungus on the eggs, but I may have added a bit too much. Could this cause the tadpoles to die off?

These are the only things I could think of. Water parameters are fine.

[Gemma]

That is strange. These are fairly obvious things, but do you have a filter in there that could be sucking them up? Or could you have accidentally siphoned some up during water changes without realising? I'm no expert but I can't see them cannibalising since they filter feed tiny particles from the water.
I don't know anything about methylene blue but I wouldn't have added any kind of chemicals (if that's what it is? I have no idea). I would have thought that the fungus would be a good thing because it helps you to easily identify which eggs are unhealthy/unfertilised and need removing.

[n321]

Yeah I don't have a filter, so that's not the problem.

In the future, I don't think I would use methylene blue and I think I would try to do more water changes and maybe have a weak filter. It seems like they are pretty sensitive to poor water quality...

Also, I've read that they need spring/RO water. Is this true?

[N3XU5]

Are there any acf tadpole remains in your tank?

[Louis Charles Bruckner]

Yeah I don't have a filter, so that's not the problem.

In the future, I don't think I would use methylene blue and I think I would try to do more water changes and maybe have a weak filter. It seems like they are pretty sensitive to poor water quality...

Also, I've read that they need spring/RO water. Is this true?

I highly recommend a air powered sponge filter.

[n321]

Are there any acf tadpole remains in your tank?

That's what's weird. I don't see any, but maybe they just decomposed really quickly...

[Gemma]

Yeah I don't have a filter, so that's not the problem.

In the future, I don't think I would use methylene blue and I think I would try to do more water changes and maybe have a weak filter. It seems like they are pretty sensitive to poor water quality...

Also, I've read that they need spring/RO water. Is this true?

Oh, is methylene blue just a water conditioner to make tap water safe? If it is, forget what I said - conditioned tap water is fine. I assumed it was some other kind of chemical treatment because you said it was to prevent fungus forming on the eggs.

[n321]

No, you're right. Methylene blue is a treatment. I don't really know much about the effects of overdosing it...also, I was thinking that since these tadpoles are filter feeders, they may have ingested some of this...

Gemma, have you ever had a mass die-off of ACF tads?

[Gemma]

Gemma, have you ever had a mass die-off of ACF tads?

No, but I've only bred mine once. How are the remaining tadpoles doing?

[Mentat]

Methylene Blue is harmless to fish eggs and fry; so think would not harm tadpoles. It's weird they are "disappearing" since imagine you check several times a day and do not find bodies.

Tadpoles need lots of food and water quality is an issue since large water changes that alter the water chemistry could harm them. Foam filters are good since when cycled, will help reduce ammonia and nitrites. Also, tadpoles will pick out food off them (rotifers, etc.). Good luck with remaining tads !

[n321]

Well it looks like they all died. I'll try again later, this time w/out the M.B. and more water changes, filter, etc. I'll also feed them every day (I only fed every other day with the others).

[Jenste]

What were you feeding them? Diet and water quality are very important with ACF tadpoles.