fish med shelf life

Ronny#66 · 12/11/2008, 09:17 PM

I was wondering most fish med foods you name it has no shelf life date on it. As we all know they don't give this stuff away !! So when should we throw it away. Like rubbing alcohol peroxide these things keep for ever. I have a few bottles of Malchite green for ich that is 20 years old still green as ever . I baught a new bottle But hate to throw it away if I don't have to.

Ronny

Ronny#66 · 12/12/2008, 01:28 PM

Anyone have answer to this ?

cdness · 12/12/2008, 03:27 PM

I got lots of fish meds from a buddy tearing down his tank. They had expiration dates on them so I'd say check the bottle...

Ronny#66 · 12/12/2008, 10:01 PM

none on these bottles.

WaterKeeper · 12/12/2008, 10:15 PM

Your right on antiseptics, they usually have a prolonged shelf life. Other meds tend to lose potency over time. This is especially true of antibiotics that only last for around six months. The shelf life listed for Basic Green 4, Malachite Green, is stated to be 12 months but that was for its use in phosphate testing. I'd be wary of 20 year old solutions. It won't hurt anything but it may lose its effectiveness as a fungicide. Many liquid solutions are usually considered past prime after about 6 months while inorganic, dry chemicals last at least 2 years. Organic dry compounds vary so much that unless there is a shelf life listed I pitch them within a year.

Ronny#66 · 12/12/2008, 11:49 PM

I threw it out. The new ich treatment cured my new fish in 3 days I 'm very happy so far .

12/11/2008, 09:17 PM	#1
Ronny#66 Registered Member Join Date: Apr 2007 Location: Twilight zone Posts: 1,839	fish med shelf life I was wondering most fish med foods you name it has no shelf life date on it. As we all know they don't give this stuff away !! So when should we throw it away. Like rubbing alcohol peroxide these things keep for ever. I have a few bottles of Malchite green for ich that is 20 years old still green as ever . I baught a new bottle But hate to throw it away if I don't have to. Ronny

12/12/2008, 03:27 PM	#3
cdness Premium Member Join Date: Jul 2008 Location: Fargo, ND Posts: 870	I got lots of fish meds from a buddy tearing down his tank. They had expiration dates on them so I'd say check the bottle... __________________ 125G Reef, 40G sump, Marineland 4500 returns, Dart Closed Loop, OM 4-way, LED and Apollo LED Red River Valley Reefers - Fargo, Moorhead, Grand Forks Reef Club -http://redrivervalleyreefers.com Current Tank Info: 75G display, 20G sump, Additional 10G Fuge, drilled, Ocean Runner 6500 for closed loop, Catalina Aquarium CA4000 Return pump, MSX 160 Skimmer

12/12/2008, 10:15 PM	#5
WaterKeeper Bogus Information Expert Join Date: Oct 2000 Location: SW Ohio Posts: 16,147	Your right on antiseptics, they usually have a prolonged shelf life. Other meds tend to lose potency over time. This is especially true of antibiotics that only last for around six months. The shelf life listed for Basic Green 4, Malachite Green, is stated to be 12 months but that was for its use in phosphate testing. I'd be wary of 20 year old solutions. It won't hurt anything but it may lose its effectiveness as a fungicide. Many liquid solutions are usually considered past prime after about 6 months while inorganic, dry chemicals last at least 2 years. Organic dry compounds vary so much that unless there is a shelf life listed I pitch them within a year. __________________ "Leading the information hungry reefer down the road to starvation" Tom Current Tank Info: 130 Now out of service and a 29

12/12/2008, 01:28 PM	#2
Ronny#66 Registered Member Join Date: Apr 2007 Location: Twilight zone Posts: 1,839	Anyone have answer to this ?

12/12/2008, 10:01 PM	#4
Ronny#66 Registered Member Join Date: Apr 2007 Location: Twilight zone Posts: 1,839	none on these bottles.

12/12/2008, 11:49 PM	#6
Ronny#66 Registered Member Join Date: Apr 2007 Location: Twilight zone Posts: 1,839	I threw it out. The new ich treatment cured my new fish in 3 days I 'm very happy so far .