Pool Putty is a two-part, hand-moldable epoxy putty for concrete or Gunite pool repairs.
Just cut, mix and fix, no need to drain pools to repair because it hardens under water.
Once cured, it will not shrink or sag.
 

Pool Putty Epoxybond, White

Perma Pool Patch, 10 lb pail, quick set plaster for gunite pool repair, twice as strong as cement with 3 times the bonding power, for under water and out of water use, mixes with water

Kelly Tech, #960 Concrete patch, 1 gallon can, two component formula, mix together to repair cracks under or above water, cures overnight and can be painted the next day

Kelly Tech, #962 Pox-O-Fill epoxy, 1 gallon can, high strength epoxy, two component formula, mix together to repair cracks above or below grade, also used as an anchoring compound for diving boards and ladders

Kelly Tech Permaseal, 10-1/2 oz tube, Nitrile rubber one-component joint filler and sealer, in cartridges which fit a caulking gun, converts to nitrile rubber in 18 to 24 hours. Apply to clean pool and deck joints without a primer.

HCL Advantage is an additive for muriatic acid when acid washing pools. Adding HCL Advantage to a solution of muriatic acid and water will thicken the washing solution. A HCL and muriatic solution will adhere to pool walls longer making cleaning easier and safer.
 

HCL Advantage, acid wash aid, 1 quart bottle

Hydrochloric acid 22 baume, decreases pH and total alkalinity,
1 gallon bottle

Hydrochloric acid 22 baume, decreases pH and total alkalinity,
5 gallon bottle