Watering Information
There are a few questions people have asked about watering their horses. The first is about algae. Actually, algae as well as bugs (like mosquitos) will grow in most water tanks whether the tank is cement, metal, plastic, or rubber. Adding bleach to the tank may keep algae from growing and allow the water to last longer. I would suggest not using bleach. It is too easy to make an error in measuring the bleach - this may cause harm to your animals.

Instead, add a fish or two to your tank. Almost any fish will do. They generally do a good job of keeping the algae cleaned up in your tank as well as getting rid of bug and bug larvae. Also, moving the tank out of the sun will help slow algae growth a great deal.
Rusty tank? That is ok. Just clean out the tank once a week and things should be just fine. If the rust bothers you, consider purchasing one of the rubbermaid watering tanks.
Also, try to keep the area around your water tank dry (at least not super-muddy). Hoof problems are generally caused or aggravated by overly wet environments.






Ear Gnats
While in the pasture, horses can wear fly masks that cover their ears also. You may try putting fly spray around their ears in the morning and at night. If you leave a halter on your horse (not recommended), you could always attach a cattle fly tag (pyrethrin type) to the halter.
The suggestions made here are meant for experienced horsemen. Fix My Horse is not responsible for the actual use of this information. Always consult your local veterinarian before attempting to implement any idea, concept, or theory that may harm you or your horse.