Kordon Methylene Blue Disease Preventative – Safe for Freshwater & Saltwater Aquariums, Prevents Fungal Infections & Treats Parasites, Reduces Fish Stress, 4-Ounces

I've been using methylene blue for a long time. I use it for fungus on my fish if I notice a little bit starting or if their coat starts getting a little slimy. I usually try this before I try anything else. Or if for some reason my nitrates or nitrite spike I'll use this a little bit for some added oxygen if my fish start getting stressed out or are already stressed out. This has always worked very well for me. I've never had any fish stressed out about it. No headshaking ever like what happens when I add metronidazole or praziquantal or other meds. Methylene blue has also never hurt my pond plants. I don't pour it directly in my pond. It's always been in the hospital tank. I did recently use it when I bought some water hyacinth from a pond shop. I always bring them home and put them in a container with grow lights and heat to make sure that they don't have a bunch of snails and dragonfly nymphs and whatever else there is on those things. Well, I ended up having a bunch of baby fry fish hatch from these plants. About a week later the little fry baby's started turning white and dying. I wasn't really sure what to due because I didn't want to kill these plants that I just spent a couple hundred dollars for and I didn't want to let the baby fish die. I added some methylene blue and some nitrofuranzone together with the baby fry and with the plants which also had snails, snail eggs, dragonfly nymphs on them and the white that I guess was fungus on these little baby fish I can't really tell because they were so small. I did it once left it in there for two days and then the partial water change and I didn't have any more baby fry fish die and my Hyacinth plants are still growing and still blooming. Some even flowered out purple flowers right away. So it didn't hurt them at all. I was kind of disappointed about these plants and there had to have been something on them for these baby fish to get this but not only that the guy told me that they had goldfish in with the plants. I called And asked him after all these baby fries start hatching. I think something that people should think about, and I don't know if people actually just buy plants and throw them in their ponds. I always did and I always ended up coming down with some kind of ailment around that time and I just thought it was a change in temperature, water parameters. But if the place where you buy the plants has goldfish or other fish in with them they have a fungus or bacterial infection and you bring those plants home and throw them in your pond you're going to bring that stuff into your pond. So for now on I quarantine my plants. Back to the methylene blue. It's definitely blue. I've never had it stain anything. I took pictures of what it looked like. It took pictures of my fingers after completely just dipping them in the stuff. And then the last picture I took was me washing my hands one time. It was almost completely off. Once I take a shower it's completely gone. I've never had the methylene blue stain anything that I've ever had permanently. I think that having the methylene blue around in case you have something going on and you don't know what it is is a fish lifesaver. You can at least be able to use it just in case you need to. It is better than not having anything at all. If I wouldn't have had the methylene blue on hand along with the nitrfurazone at the time I'm pretty sure all the little fish would have been dead. Because that morning when I checked on them they had nothing white on them. Later that afternoon is when I started noticing it. About four of them died. So that's my methylene blue story. I'm not sure how it would stain if you got it like on your rings or your jewelry or anything but it does eventually go away when I get it on my hands and stuff.

Saved my betta from dropsy. This stuff is a life saver. It is very safe as long as you dose correctly. And my betta is happy and healthy now because of it!

Worked great on my sick fish, kept the fish in the Methylene Blue for a few days and slowly started to do water change to ease it's transition back into normal water. Just follow the instructions and be careful not to spill as it can stain counter tops.

It appears to work rather quickly against Saprolegnia on Koi. Note: This bottle is a little leaky, and the stuff stains like heck. Use rubber gloves and keep the bottle in a bag in a bucket, and make sure it doesn't come into contact with things you don't want blue.

Delivered as described. The treatment was successful. For sure satisfaction from my end.

Good quality, very strong and concenntrated. Easy to use. Very cheap. Safe for fish to have the fish for 5_ 10 minutes once a day for 5 days if the fish sick. Works very fast.

Keeps my fish as healthy as can be. When I get them home everyone goes into a quarantine tank treated with this product befor going into my big tank!!! Would give 10 stars if I could

This will last you forever, I use this to treat freshly laid fish eggs for my Cory's and Angel's to prevent fungus problems, works like a charm!

Muy bueno, con menos de una gota de cubren 50 litros

I have used this product to breed discus fish and it was very useful. I would recommend this item for sure

Works well great stuff

Devo complimentarmi con il sito. Prodotto che ha soddisfatto le mie aspettative.

j'ai commandé ce produit pour mes poissons rouges qui étaient malades car a ma pharmacie il était beaucoup plus cher . Je pensais recevoir le produit rapidement il a mis plus de 2 mois des poissons sont morts et la maladie prenant de l'ampleur J'ai du l'acheter a la pharmacie produit très efficace qui a sauvé les autres poissons du coup me retrouve avec une bouteille entamée et une bouteille neuve si les problèmes recommencent je les auraient . PRODUIT EFFICACE