"Mountain Lake" is not a geometric shape, or at least not one I've ever heard of -- but if your pool is more or less a rectangle, your volume is more likely to be MORE than 30K gallons, than it is less than 30K. With algae, too much chlorine is much better than too little.

So . . . I'll assume a PF of 3.5 (~35,000 gallons) rather than 5 (24,000 gallons). With a PF of 3.5, a gallon of bleach will increase your FC by 0.5 lbs Cl2 equiv/gal 6% bleach x 3.5 or 1.75. So you need evening doses of 8 gallons of 6% bleach.

You can test with an cheap OTO kit -- you can skip the evening dose, IF your OTO reading in the EVENING is DARK yellow with an orange tint. Otherwise, 8 gallons of 6% bleach EVERY evening till there's no trace of algae left. After the 2nd dose, BRUSH the pool carefully.

BUT . . . if you find that your chlorine has NOT dropped after a full day of sun, THEN we know your CYA is very high. And in that case you need to NOT skip, but go ahead and take your chlorine level into the 30 - 40 ppm range (orange with an OTO kit), and keep it there, until you get your K2006.

By the way, once your chlroine goes above 10, your phenol red pH test results won't be reliable, so if your pH needs major adjustment fix it now. But, if it's between 7.0 and 8.0, you can worry about that, later.