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When I shock with dichlor I use 3-4 TBS for a 225 gallon tub.
I need to do a weekly shock and wanted to know the best method. I have a 360 gallon tub. If I use diclor, how much should I use? If I use MPS, how much should I use? Which method is best?? Thanks. Karen
[First let me start by saying both ways with adequate(?) amounts will eliminate CC.(The main reason for a shock) TC-FC=CC. Usually when CC is .5 or more it's time for a shock. Sometimes however depending on usage it might not get that high for a while. So a good rule of thumb is ATLEAST once every other week. I shock with both personally. Only once a month I dichlor shock and the other 3 times I use mps. I do this because I feel my need for a superchlorination is decreased due to my light bather load and my daily post soak dichlor dose. The amount of Renew by Leisure Time(mps) is 2oz per 250 gallons.The amount of dichlor used is 10 times the amount of CC. i.e.- If your tubs CC is .5 after one week you only need to add enough dichlor to reach a 5 ppm FC. This is roughly only 2 tsp for me.
I appreciate your thorough example. (last paragraph) I have "known" this, yet didn't really "get it". As per the pledge I made in one of my past posts, I will do the math!With winter finally arriving to my area on Wednesday, I do NOT want to be having the cover open for hours, trying to fix water care issues that I should have been able to prevent to begin with.Your wording and number example helped things to sink in a bit better this evening.