The high charge current produces a surface color, which corresponds to a state of charge of 70â80%, although the average SOC is just 45%. The high discharge current also forms a large gradient of the state of charge in the graphite anode, which is reflected in a black color. Due to this color we presume that the anode surface has a very low SOC.
The ongoing costs of a pool (electricity, maintenance, and repairs) can cost owners $3,000-$5,000 or more per year. In an effort to save money, many homeowners decide to tackle pool cleaning on their own.Using the monthly pool costs outlined above, that can work out to yearly savings of more than $1,000. Extremely dirty pools (so murky that you canât see the bottom on the deep end) might require a drain and clean service that runs $500 to $600 or more. 2  Pool acid washingârequired for the most stubborn pool stainsâcosts $200 to $300 in addition to the cost of a drain and clean.
POOL MAINTENANCE. The cost of a new pool doesnât end with its construction. Depending upon how much of it you hire out, maintenance, supplies and electrical costs can run between $1000 and $3000 a year.Thereâs opening and closing, cleaning, checking connections, adjusting pH, adding algaecide, surface repairs, and liner replacements.oncrete pools need to be resurfaced every 10 years or so, a job that can cost even more. Fiberglass pools have a life expectancy of 25 years, making them a low-cost option in the long term. In addition, fiberglass is less likely to stain or support the growth of algae, thereby reducing maintenance hassle and expense.