Excessive Algae in pool

H3LBR3GHT

In The Industry
Hi Everyone

I am working with one of our local Inn's to get their pool sorted. Here is a breakdown of what we did and would like everyone's feedback on options:

We started in week 1, Tuesday, client calls saying that his pool (147 000lt = 38833gl) has started going green since the Saturday. He requested some chlorine and maintenance floaters as the ones in the pool had started to run out. We delivered the same day. Friday, week 1, he calls saying that he is losing the battle can we send some algaecide and more chlorine as he has not picked up a count on the testing kit yet. The algaecide on his size pool is 1.5lt, we send 2lts. The next day he calls saying there is something wrong as he has chucked in a whole 20kg of chlorine into his pool (over a period of 96hrs) and the testing kit is not finding any chlorine. (Background info on our chlorine is 50-70g per 10000lt so on a normal dose he would throw in 1.05kg. Using chlorine as a shock treatment would be 2kg. He threw in x10 the amount and nothing happened)

We agree to assist and do everything ourselves on Monday, week 2, where we started with PH UP at double the normal dose. Left for 24hrs, nothing. Did another double dose and retested after 24hrs, no increase (6.8 - our kit cant read anything less than that). Client calls on Wednesday and says we need to get a move on as he has guests booking in on Saturday , week 2. We take 6lts of algaecide and 6 packets of pool shock and add in over 12hr period and finish off on 3lts of flocculent. On Friday, week 2, we have a pool that is as green as the darkest emerald having killed 0 algae and did not even flocculate at all. We went in to do an inspection as well during the weekend of week 2 and found that the filter system has a lot of debris and some algae growing but I have seen worse filters in the past.

What are your thoughts. I tried to add as much info as I can remember but feel free to ask questions!
 
Welcome to the forum.

Your methods are not conducive to success. Algaecide does little to existing algae.

Read through SLAM Process. You need to follow that. You need proper testing and diligent (hourly evolving to several times daily) intervention to be successful.
 
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