You don't need calcium; your alkalinity is low, but that doesn't matter unless your pH is wandering around.

You need to be testing your OWN water!

If you leave the testing up to the pool dealer, you're going to end up giving him a gift: $$$'s for special chemicals to 'clean up' your algae. Stop it! Go get a cheap OTO / phenol red drops kit and a full dozen gallons of PLAIN 8% household bleach. Go home, test your pH, and then add 4 gallons of the bleach this evening, and each following evening, till the algae is ALL dead. If it hasn't turned brown or gray within 1 hour after adding the 2nd dose, increase the 3rd dose to 7 gallons. Once it's turned brown, add ANOTHER dose and then brush the pool.

You also should order a Taylor K2006 kit, but don't wait till you have it, to begin treating your pool!

Do not add any more algaecides or other chemicals till the algae is ALL gone. If you have a 2 speed pump, turn it on low, but run it 24/7. Check your pH in the evening just before adding more bleach. If it's between 7 and 8, it's fine for now.

. . . membership updated.