Can I use "Maracyn-Two" (by Mardel) with Loaches i

[MARITA]

I have a 30 gal aquarium and saw that my fish has fin-rot. I have medicine (Maracyn-Two by Mardel) and would like to treat it.
However, I also have 3 loaches (kuli & do-jo) in that tank and don't want to harm them with medication. The back of the box does not indicate any warnings, but I figure I check with you guys!
Thanks.

[Jim Powers]

I have used it on various species of loaches with no problems.

[NancyD]

Me, too but not as many species as Jim.

[chefkeith]

What kind of fish has the fin rot? Also why does it have fin rot?

Most of the time fin rot is related to water quality problems. Could this be water quality related?

Also it is best to quarantine sick fish and better to use anti-biotics only in quarantine tanks.

[MARITA]

It is my goldfish that has symptoms of fin-rot. (I've had one goldfish and the 3 loache in same tank for over a year). I do the water-changes once a week and even use bottled springwater. I ajust the water temperature of new water to the tankwater. I use water-treatment. Lately, the Nitrate level was a bit higher (not in dangerous levels), which I blame on over-feeding. The only problem I really have is algae. Everytime I change water, I also clean off the algae in tank. I'm scared to use any algae treatment because I read it was too harmful to fish.

[chefkeith]

Sorry, but I can't give you any advice on how to treat the goldfish with those loaches. IMO, the goldfish belongs in a pond. The Dojo and the Kuhli Loaches shouldn't be together either as they require different water temperatures. Kuhli's should be in 78 -82F temps. The Dojo in 50-77F temps.

Congrats though. I think you've done a great job on keeping those fish together up to this point. The only real way to move forward is to make some major changes.

[Diana]

A nitrate level that the test kit instructions say is OK or marginal is not OK at all.
Do enough water changes (frequency and volume) to keep the nitrate under 20 if at all possible, and lower is better. If the water change schedule seems too much you could get more water to dilute the wastes (more tanks) or get rid of some fish.

Why are you using spring water? What is your tap water like? (pH, KH, GH, Ammonia, Nitrite, Nitrite, other)

Ditto about the fish incompatibility. A little research into the optimum conditions for each of the fish would be helpful.