Seachem Laboratories INC METROPLEX (10 Grams)

I have been keeping fish for 25 years. During that time, I have developed a small pharmacy of "definitely need" items for fish and plants. Metronidazole is one of them. I found this out by accident one year, when one of my fish had a horrible eye injury. I was taking the stuff myself at the time, and I crushed up a proper dosage, put it in the tank, and the fish actually recovered. She was blind in that eye for life, but the massive rot and white patches healed up. The Metroplex version of metronidazole works well, as it is ground very fine. Some people mix it with a food base. I have found that sprinkling it onto a fast-running filter or in the current of a power head during feeding times works super well, too. The fish cannot avoid ingesting it as they eat.This version of it can treat my 75-gallon tank a few times, and it does not kill my bio filter or plants. It is well-tolerated by the fish, and it attacks a great number of injuries and infections. It can kill both gram negative and postive-staining bacteria, which, in a pinch, is awesome, because some infections include bacteria of both kinds. (It attacks fungal infections as well, as most women can tell you. ;) )This medication, combined with Paraguard, creates a powerful team against many fish diseases. I have used it to curb some parasites, like anchor worms, and it helps a LOT with secondary infections from injuries fish get from just being fish: hitting sharp driftwood when startled, etc. It attack protozoa, especially, meaning it can treat "guppy disease," velvet, and even help treat scoliosis in fish, which can be caused by microsporidiosis.I recommend that all fish keepers have neomycin, kanamycin, Paraguard, and metronidazole on hand as often as possible. These items have only hurt my plants once, and that was in 2007, during ice storms, when the complete biological filter in my big tank was wiped out. (Since then, I keep Pristine and Stress Zyme around).Oh! If you do use this, remove the carbon or chemical filtration from your tank; it will neutralize the medication.

Destroyed beneficial bacteria, but not my fish! I'm really glad this didn't stress nor kill my fish and inverts. I have had bad times with many other medications, used for preventative maintenance and killed instead of boosting health...I followed instructions and dosed every 48 hours. You can double dose as long as there's enough aeration and no ammonia (removed chemically). This eliminated ich and tetanus in my aquarium, which had been paralyzing the mouths of my fish and killing one or two within a day or so. One thing I disliked was that MetroPlex harmed some of my plants to the point of almost killing them.Edit: it's a very light medication. Used it several times when I noticed fish scratching or lookinh lethargic. I tried adding this every 48 hours for up to two weeks, but doesn't eradicate ich completely nor other parasites. When I double dosed daily instead for another week, it still did nothing. I guess it's kinda like using Paraguard. Maybe kills free-floating parasites, but not the ones attached to fish. Dropped this to 4 stars because of that. I'm going to be using a stronger medication, but I risk killing invertebrates and more of my beneficial bacteria (I literally had to re-cycle my aquarium because of MetroPlex). They say that MetroPlex only kills gram-positive anaerobes, however, my filter bed is comprised mostly of Seachem Stability's heterotrophic bacteria, which also mostly gram-positive. So there could be a correlation?

Metroplex has always been in my arsenal of medications along with kanaplex and paraguard. In my opinion these 3 options are a must have for anyone serious about this hobby.

I’m currently using this in the food in my saltwater tank as I suspect one of my Tangs (Yellow) is having an intestinal issue. She is eating well but has continued to grow thin. So far dosing five days now with Metro and Focus in their food. If putting this in the food with the affected fish still eating (which is great ) you need to dose with equal parts Metro and Focus, the Focus lets the Metro (or another medicine) bind to the food so it actually gets into the fish’s internal system, rather then dissipate into your tank water.

Cured the hole in the head disease in pur Oscar fish💖

My Oscar fish had hole in head disease. Came across this stuff and figured I'd give it a try. Had to repeat and give multiple doses but it's worked great.My only complaint is I wish they sold this in larger quantities. I have a 75 gallon tank so the small container doesn't last very long.

Small amount

I followed directions it left a white film all over everything. I think it killed my 12yr old blood parrot fish. After second application there was a white film all over him and he died that day. I was heart broken, I have used other products before with no issues.