Green Algae

Algae problems in swimming pool water.
Green (cloudy) water or slimy pool walls.
Black algae. Mustard algae. Pink or white pool mold.
Guest

Green Algae

Postby Guest » Sun 26 Oct, 2008 14:54

Hi All,

I just found your wonderful forum, and was hoping someone can help rip my pool of this green algae.

I have a 'dropper test' that I can do for some info. Which do you need to diagnose where the chemicals are currently at?

I'm in Australia and have a 44000L in-ground Saltwater fiberglass pool.


Pilkojr
Pool Newbie
Pool Newbie
Posts: 6
Joined: Sun 26 Oct, 2008 14:48
Location: Australia

green algae

Postby Pilkojr » Sun 26 Oct, 2008 14:56

Sorry...thought I was logged in.

The above post is from me.
Thanks,
Pilkojr - AUS
chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

green algae

Postby chem geek » Sun 26 Oct, 2008 15:04

Read this link in the Pool School at Trouble Free Pool for more info on clearing your pool of algae.

Since you have a saltwater chlorine generator (SWG) pool, you must have had a low Free Chlorine (FC) level relative to the Cyanuric Acid (CYA) level. In an SWG pool, you want an FC level to be at least 5% of the CYA level. The standard industry recommendation of 1-3 ppm FC with 60-80 ppm CYA is not sufficient to prevent algae unless you use a supplemental algaecide or are lucky with low nutrient (phosphate, nitrate) water.

If your current test kit does not have a FAS-DPD chlorine test kit or does not have tests for Free Chlorine (FC), Combined Chlorine (CC), pH, Total Alkalinity (TA), Calcium Hardness (CH) and Cyanuric Acid (CYA), then you need to get a good test kit. Either get the Taylor K-2006 for a good online price here (if you can't find one in Australia) or the TF100 kit from tftestkits(dot)com here with the latter kit having 36% more volume of reagents so is comparably priced "per test".

Richard
Pilkojr
Pool Newbie
Pool Newbie
Posts: 6
Joined: Sun 26 Oct, 2008 14:48
Location: Australia

green algae

Postby Pilkojr » Sun 26 Oct, 2008 15:16

I will check my kit, and see what tests it actually does.
Thanks,

Pilkojr - AUS
Pilkojr
Pool Newbie
Pool Newbie
Posts: 6
Joined: Sun 26 Oct, 2008 14:48
Location: Australia

green algae

Postby Pilkojr » Sun 26 Oct, 2008 16:52

My kit does a 'Free Chlorine Test (using DPD tablets)', 'pH Test', Acid Demand Test, Total Alkalinity test.
Thanks,

Pilkojr - AUS
chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

green algae

Postby chem geek » Sun 26 Oct, 2008 20:58

You need a better test kit -- one with a FAS-DPD chlorine test as described here and also need a Calcium Hardness (CH) test and a Cyanuric Acid (CYA) test. If you have a reliable pool store, they can do these other tests BUT many pool stores do not do the tests correctly or reliably.
Pilkojr
Pool Newbie
Pool Newbie
Posts: 6
Joined: Sun 26 Oct, 2008 14:48
Location: Australia

green algae

Postby Pilkojr » Mon 27 Oct, 2008 04:59

I'll get a test done at the pool shop down the road (try to avoid their sales pitch) and post the results.
Thanks,

Pilkojr - AUS
Pilkojr
Pool Newbie
Pool Newbie
Posts: 6
Joined: Sun 26 Oct, 2008 14:48
Location: Australia

green algae

Postby Pilkojr » Tue 28 Oct, 2008 21:44

I got the test done, but their print out they gave me doesn't have the chemical results on it, only what I should be putting in.

I was told to put;
20L of liquid Chlorine
1L Aglaecide
2kg of Stabilizer (Cyanuric Acid)
1L Hydracloric Acid
Thanks,

Pilkojr - AUS
chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

green algae

Postby chem geek » Tue 28 Oct, 2008 23:20

Do a Goggle search of "Australia chlorine test" and you'll come up with some OK test kits including ones shown here . I couldn't find any FAS-DPD chlorine test, but at least there are test kits for other water parameters including pH, TA and CYA. I didn't see any for Calcium Hardness (CH).
Pilkojr
Pool Newbie
Pool Newbie
Posts: 6
Joined: Sun 26 Oct, 2008 14:48
Location: Australia

green algae

Postby Pilkojr » Wed 29 Oct, 2008 17:56

I have email the website regarding the test kit.

Pool is now green algae free, but is cloudy still. Any ideas?
Thanks,

Pilkojr - AUS

Return to “Pool Algae & Green Pool Water”

Who is online at the Pool Help Forum

Users browsing this forum: No registered users and 7 guests