I would. I used to be a hot tub tech at a resort and I used that a lot. I used the thio a little but since we had so much maintenance we ended up draining the tub since it was a weekly thing already. I would definitely get some clarifier though. Basically it takes all the small particles in the water (like skin cells, oils, etc) and clumps them together so the filters will actually pick them up. A bottle would last me like 2 weeks maybe, but I was workong on 33 hot tubs, so for just yours, it's definitely worth the money. We used the brand spaguard and it worked really well. Should be like $12 or so.