Do NOT add algaecide--it will only make your problems worse. Chlorine is STILL the best algaecide there is.

If you add an ammonia-based algaecide, you may get foaming. Copper-based algaecide will give you high copper problems.

Even the only algaecide we recommend, Polyquat 60%, is not recommended to KILL algae, but only to prevent it.

Normally, a CYA of 60ppm calls for a shock level of 20ppm of free chlorine, but with an SWG, which by itself demands higher CYA levels, Watermom is probably right about 15ppm as the target, but going to 20ppm won't hurt. You'll probably need to raise your SWG level.

AFTER you get rid of the algae, then add about 1.5 to 2 oz of polyquat every week to help prevent algae.

Every gallon of UltraBleach will increase your free chlorine level by about 3ppm. So if your FC is now 3.5 ppm, you'll need about 4 gallons of it (6% concentration of bleach).