Quinine Sulfate Dosing

[Tat2demon]

Im on my 3rd day of running Crypto-Pro in my QT on a couple new fish.

Directions say to use 1/8 of a spoon per 10 gallons each day with a 25% water change. It also says that on tanks larger than 50G only one treatment is needed.

Someone please explain to me why I need to use 7x the amount and use up 70G of saltwater when according to them one dose will work just the same. Tank volume shouldn't matter as long as the dose is proportionate.

 

[Tat2demon]

Ok I just called National Fish Pharmacy and was told that I only need to done once at 1/4 tsp per 10 gallons for my 40 gallon QT. The 1/8 per 10 each day is for 20-30g and smaller tanks.

 

[MrTuskfish]

Please keep us posted on your progress; are you treating anything specific, or just a preventative? QS is supposed to work well; buy difficulty dosing, keeping it in suspension, and testing its level, have made me leery of the stuff. I've heard lots of pros & cons.

 

[Tat2demon]

Im just treating all new fish, not for anything specific. It was 2 large green chromis and a candy hogfish. Lost the hog yesterday and one of the chromis today. Until last night I was doing the daily dose. The dead fish looked just fine before they died and were eating great so wondering if it was an overdose.

 

[MrTuskfish]

Im just treating all new fish, not for anything specific. It was 2 large green chromis and a candy hogfish. Lost the hog yesterday and one of the chromis today. Until last night I was doing the daily dose. The dead fish looked just fine before they died and were eating great so wondering if it was an overdose.

Sorry about the loss. Hard to tell with new fish, some just don't make it and we'll never know why. There are some great hobbyists (IMO) like Bob Fenner, who really like QS. I really wanted to try it, but if a med can kill parasites, I think dosing is obviously vital. It would be fine if you could just measure and be sure, there are meds that you can't test for---but I still use (like formalin). I talked to a couple of tech support people at different companies and their worry was that QS is hard to keep in suspension; making it impossible to tell if you're at a therapeutic dose or not. There seems to be a lot of good qualities to QS, maybe someone will come up with a delivery/test method and it will become more popular. If you followed the directions; I'd think over-dosing would be impossible, though.

 

[Tat2demon]

Im not sure. I would think if you keep adding every single day the level would just keep accumulating. Unless this stuff degrades very a very short period. I hear UV light will break it down pretty fast but I havent heard of any other way.

 

[Tat2demon]

I guess what I don't get is one dose at 1/4 tsp can be given to treat the tank over 5 days. To me that means the medication doesn't degrade.

That also means that after 2 days of the 1/8 per 10 daily dose is already at full strength.

Wouldn't that mean that every day after that is an overdose?

 

[NarakuAulonocar]

BE CAREFUL, the directions on my quinine (from NFP) says to do at least a 50% or so water change before redosing. Maybe thats what killed the hogfish. Just a thought.

The dose is 1/8 tsp per 10 gal. They should have a spoon in the package that is 1/8 tsp.

I guess what I don't get is one dose at 1/4 tsp can be given to treat the tank over 5 days. To me that means the medication doesn't degrade.

That also means that after 2 days of the 1/8 per 10 daily dose is already at full strength.

Wouldn't that mean that every day after that is an overdose?

 

[Tat2demon]

Mine, also from NFP, says 25% before each daily 1/8 per 10 dose. Still, even at a 50% change it would only take 4 days to reach the one time treatment level.

 

[NarakuAulonocar]

Hi, that was what was written on my product.

FYI: I have read somewhere on the forum where some one did the one time treatment and left it for a week.

Personally I would do a 90% water change and redose every day or just just dose once and leave for a week.

I believe its possible to overdose because I tried doubling the dose (mistaken advice) which killed my fish.

Mine, also from NFP, says 25% before each daily 1/8 per 10 dose. Still, even at a 50% change it would only take 4 days to reach the one time treatment level.

 

[Tat2demon]

I plan on doing the one time week long treatment on my next fish order. Its strange that the same company gives three different sets if directions for the same product.

I have no doubt that it can be easily over dosed. Im even going to do a 100% change on my QT before my next set of fish just to make sure there is none left.

Quinine Sulfate is fairly dangerous stuff. Bad enough the FDA has banned it from human consumption due to some bad side effects. I would imagine it could be even more deadly to fish if overdone.

 

[Kieth71]

I dose the 1/8 per 10g then leave for 5 days.I then do a 50% water change and redose and leave for another 5 days.I then do another 50% water change and run carbon to remove whatever is left in the tank.I try only to use this stuff on fish i really dont want to use cupramine on as i am not 100% sold on it.I cant test to see if the level is good so it has some risk to it imo-Kieth

 

[MrTuskfish]

I dose the 1/8 per 10g then leave for 5 days.I then do a 50% water change and redose and leave for another 5 days.I then do another 50% water change and run carbon to remove whatever is left in the tank.I try only to use this stuff on fish i really dont want to use cupramine on as i am not 100% sold on it.I cant test to see if the level is good so it has some risk to it imo-Kieth

Its easy to precisely test Cupramine; IMO, a Salifert test kit works best . Cupramine is also effective at lower levels than the recommended level on the bottle; so fish that are possibly copper-sensitive can still be treated with a smaller, but effective, dose.

 

[Tat2demon]

Pretty sure he meant not being able to test QS.