Green, Dark, Slippery Spots
In most cases, when your pool is faced with green, dark, or slippery spots - including patches that exhibit all three of these characteristics - algae growth is most likely to blame. Get your hands on some calcium hypochlorite and sprinkle a small handful of the calcium hypochlorite crystals directly onto the spots.
Keep in mind that calcium hypochlorite also works for taking algae spots off of wooden decks.
Eyes Hurting While in the Pool?
Humans obviously don't often open their eyes underwater. As such, when people do allow a body of water to come directly in contact with their eyeballs, they experience weird, one-of-a-kind sensations and are also susceptible to pain or discomfort.
If your eyes are hurting while swimming, it's most likely that the potential hydrogen level of the pool's water, also known as the pH level, is not where it's supposed to be. Put chlorine in the pool until it measures at a pH level of precisely 7.8. Also, the chlorine residual should range between 0.4 and 0.6 parts per million.
Experiencing Green Water?
If your pool's water is green, you might have to break out the elbow grease and shock, pump, brush, and filter the pool.
Although you have to treat Pool heaters Pittsburgh with care in order for them to work well and last very long, they're worth it. Make sure your chemicals are right and you'll be good to go.