I'm having a problem with the algae growth in my goat's water. I have a 40-50 gallon black plastic trough. I clean it our pretty regularly, but with this weird heat/cold thing going on right now, the algae will spring up for a few days then die off. On BYC I've heard of using apple cider vinegar or pennies, but how will they work for goats? Also, will that help with the mosquitoes when it get hot? During the summer, I'm usually emptying it every other day because it gets so many larva in it.