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Try hydrogen peroxide. It attacks mold like no other. 50/50 hp with water is a safe way to go.

The cost of your solar system depends on several things. One, you need a sunny spot with no shadowing. Two, you need to know the Peak Sun Hours for your area. Then you can use this formula to figure out the size of system that you will need. average kWh (kilowatt hours) per day divided by...