First off, there is no such thing as "Chlorine Lock". This is a bit of pool store nonsense and even if there was, you have to have CYA above 150 to 200ppm before you get it--or something that looks like chlorine lock.

How did you get your CYA to 92 from 40????

If that's correct, you need 11 gallons of Ultra bleach....or if you have a pool store that sell 5 gallon carboys of nominal 12%, you'll need the whole thing.

Have the pool store test your water and see if the numbers match your Lamotte test. Electronic testers look cool but they are notoriously inaccurate. You'd do better with a simple WalMart HTH 5-way drop test kit. Don't buy anything the pool store guy tries to sell you but the liquid chlorine--you'll need to put a deposit on the carboy but you can use the empty as the deposit next time.

You need to go back to our various threads on algae fighting--and stick to it. You have been dumping a bunch of stuff in, and hoping it will magically clear it up.

There's no magic, there's no mystery. You need to consistently shock your pool ONLY WITH BLEACH OR LIQUID CHLORINE until the TC and the FC match and your FC levels don't keep dropping rapidly. Some loss over 24 hours is normal, but to go from 15 to 1 in a 8 hours means you are fighting organics. So you should be checking your water 2 to 3x a day and immediately adding chlorine if FC is low and/or not matching TC (remember: TC = FC + CC always and forever--and you want CC to be 0).

The pool store will sell you clarifiers, algaecides, mineral erosion kits, non-chlorine "shock", cal-hypo "shock", phosphate removers, calcium increasers, but they won't sell you what you need: an FAS-DPD Chlorine test kit. So use them for what you can, and buy from them what you cannot get elsewhere. If you find a good, knowledgable pool store salesman, give him your business if his prices aren't TOO unreasonable...I know one and only one of the 10 stores I will go to.

I know you've been working hard. Ordering the FAS-DPD test kit was smart.

I think the hardest two things about fighting algae are:
1) Not panicking
2) Being patient and persistant.
Otherwise, the rules for fighting are very simple:

1) Adjust pH and measure CYA (if you can).
2) Keep your FC at the recommended shock level for that CYA (See the "Best Guess" chart).
3) Use only bleach or liquid chlorine to maintain that shock level, and test it and adjust it 2x to 3x (better) per day. You can do it 4x or 5x a day--you'll use more chlorine but you may kill the algae faster. Expect to use lots of chlorine.
4) Run your filter 24/7.
5) Once a day, vacuum to waste and brush your pool.
6) Be patient and persistent.

*7) Establish a daily regimen of pool maintenance that prevents this happening again.
a. Just test pH and chlorine every day, and adjust if needed.
b. Once a week run all the tests in the FAS-DPD kit (FC, CC, pH, T/A, CYA).
c. If you have a hard pool, test CH too, weekly.
d. If you have a vinyl pool, test CH 2 or 3x a summer--no more is needed unless you have a problem.
e. (you can skip acid and base demand tests--they vary widely depending on conditions and you don't need them--I don't believe the TF-100 even has them, instead having larger amounts of the other reagents).