Using Alum as a flocculant

 When a pool is really green and has so much algae that you can't even see the bottom, it is either time to drain and refill the entire pool or floc the pool and vacuum to waste. A flocculant drops everything to the bottom of the pool so that it can be vacuumed to waste. 

One of the best flocculants is Alum (i.e. Aluminum Sulfate). Alum is Al₂(SO₄)₃

Here is the reaction when added to water: 

Al₂(SO₄)₃ + 6H₂O ® 2Al³⁺ 3SO₄^2- + 6H⁺ + 6OH^- ® 2Al(OH)₃ + 3H₂SO₄

The resulting product is Al(OH)₃  which is an insoluble floc that will drop everything to the bottom of the pool where it can be vacuumed to waste. This including a good portion of cyanuric acid (stabilizer), carbonate alkalinity, and calcium hardness. (Adjust as needed after vacuuming and refilling.) 

Besides the floc, the remaining by-product is 3H₂SO₄ (Sulfuric acid) meaning that adding Alum will lower the pH. You can deal with this in one of two ways. You can raise the pH to a higher than normal level prior to adding Alum so that the pH doesn’t drop too low after adding it, however, the Alum will work better if you add the Alum when the pH is normal (near 7.2) and then raise back as needed after it drops. 

Temperature is also important as the water needs to be 70 degrees Fahrenheit or higher for a good chemical reaction to take place. 

Dosage isn't precise: dissolve and broadcast 2-6 lbs alum per 10k gallons.

Where to find it. Alum can be purchased from pool stores, but you will find better prices on larger quantities at garden centers as alum is also used in flower gardens.  

Silver Algaecide

 Silver algaecide has an oligodynamic effect on algae. It initially creates pores in the cell's membrane and then damages DND and m-RNA. It denatures its ribosomes, alters its energy drive, and damages the mitochondria causing cellular dismantling and oxidizing vital proteins. "Silver is badass; they use this stuff to kill werewolves." -- From "Mastering the Art of Green-to-Clean," by Rudy Stankowitz in Aqua, August 2023, p, 31. 

Copper Algaecides

It turns out that copper is vital to the survival of algae and photosynthetic bacteria (better known as black algae). So why do algaecides contain copper? 

A little is vital, too much is deadly. It is a bit of a Trojan Horse effect. The algae will readily take in copper, but if it takes in too much then the copper will interfere with the Calvin cycle (i.e. the photosynthesis process whereby carbon dioxide is converted to sugar.)  

First time iAqualink set up

 If I just installed an iAqualink wifi antenna for you, this is what you need to do to start using your phone to control your pool.

1. Make sure your phone is connected to the same wifi network that the iAqualink antenna is. 
• (This is for security purposes for the initial setup. Once you have added your system, you can control it from anywhere you have internet access.)
2. 
   Install the iAqualink app by Zodiac Pool Systems. 
   
• (Found on the Apple App Store or Google Play Store.)
3. Sign up for a new account. 
• Make sure your password meets the listed criteria.
4. Add your system. 
• Hit the plus sign in the top right corner. 
• Select the first line "AquaLink RS, PDA, Z4/TRi).
5. Enter your device number. 
• It is the 12 digit code printed on the back of the door hanger. It is also on a sticker on the bottom side of the iAqualink antenna. 
6. Give your system a name. 
• If you have only one system the name doesn't matter. It can be your last name, My Backyard Paradise, or anything you want. You will select this every time you log in. If you have two or more systems like for rental properties or vacation homes, then naming them becomes important. 
7. Wait for it to connect.
8. Using your system:
• Each time after logging in, select your system. This will take you to the home screen.
• The Home Screen lets you turn on the pool, the spa, the heater, and set the temperatures. It also displays the current temperature of whatever is on. 
• The Equipment Screen is where you turn on features like lights, waterfalls, etc.
• You can set up one-touch scenes if you like. These are macros so that one touch does several things at once. 
• The Web button allows access to a more complete, but slower, version of the control system. This is where you edit schedules and set up the system. 
9. Other people in  your household can also have their own account. Simply have them repeat all of the above steps. Alternatively, they can install the app and sign on with your user name and password.     

Two or more people using the same iAqualink

 How can multiple people control the same system using iAqualink?

Method 1: Have them sign in with the same credentials that you use. They would put in your email and your password. 

This should work. If it doesn't, I suspect that you need to update your own password. Older versions of the app allowed for weak passwords. Newer versions require stronger passwords. Perhaps you still have an old version of the app and the person installing it now is downloading the most recent version. To update your password use the forgot password feature. You will get a link in your email to reset it.

Method 2: Have them set up their own account:

1. First they need to make sure that their phone is connected to the same 2.4 GHz wifi network as your iAqualink antenna is. This is a security feature and it only applies during this sign up process. 
2. Download and install the Zodiac iAqualink app from the Apple App Store or the Google Play Store.
3. Make sure that the outdoor controller is in "Auto" mode. If it is in "Service" or "Time Out" you will not be able to connect.  
4. Inside the app, select "Sign Up" and fill out the form.
5. On the app select "My Systems" (you may need to access this from the "hamburger" dropdown menu on the top left. 
6. Once in "My Systems" select the + sign on the top right.
7. Select the first line, "Aqualink RS, PDA, Z4/TRi"
8. On the next page enter the device number that is printed on the label that is on the outside of the iAqualink antenna.
9. Make up a System Name. This can be your last name or anything that you call your backyard pool. The only times it matters what you call it is if you have two different systems or two pools (for instance, you have one pool at your primary residence and another pool at a vacation home.) 
10. Select the "Add System" button and it should connect.

If it doesn't connect confirm that  you are on the same 2.4 GHz wifi network. The antenna may be connecting via a wifi extender or a guest network. For this sign up procedure to work, you must be on the same one during the add system part of the procedure.   

If that doesn't work, confirm that all three lights on the bottom of the iAqualink antenna are lit. 

An open letter to the managers of the SoCalGas Marketplace,

I am the owner of Technical Pool Repair. I have been servicing and installing gas pool heaters in the SoCalGas territory since 1998. 

A pool heater is not simply an appliance that you plug in. It must be installed. But before that, it must be sized correctly to ensure that it receives enough gas for complete combustion and that it is installed on a system whose water flow is a good match for the flow requirements of the heater. For these reasons it is important that heaters be replaced under the guidance of properly trained contractors. It is irresponsible of the SoCalGas Marketplace to encourage home owners to purchase heaters online based on a few choices listed on your site. Home owners do not know about gas requirements or water flow. They almost invariably choose a heater that is less than ideal for their situation. If an oversized heater is installed where there is inadequate gas supply, it will result it incomplete combustion which means excessive pollution. It also means that this pollution -- this soot -- will soon be obstruct air flow through the heat exchanger. The heater will destroy itself in only a couple of years. This is why it is irresponsible to have the SoCalGas Marketplace set up as you currently do. 

The responsible way for SoCalGas to set up such a program would be to funnel interested pool owners to qualified contractors and then work together with those contractors. 

Additionally, the heaters listed on the SoCalGas Marketplace are not the most efficient nor the most current models. This is in part because the manufacturers have realized all of what I said about about sizing and professional consultations and have decided not to sell their any of their products or at least not the newest and most efficient models online. Manufactures in the last few years have realized the essential role that contractors play. Moreover, they realize that this role must begin with an initial consultation in which recommendations are made. A pool heater installer is not just someone who shows up to install whatever is purchased. A pool heater contractor must be involved in the selection as well as the installation. Not all heaters will work on all sites.   

Sincerely, 

Clint Combs 

Technical Pool Repair

iAqualink with new router

 So you installed a new router and now your iAqualink does not connect? Here is what you need to do:

1. Make sure your phone is signed on to a 2.4 gHz router connection. Some routers are too "helpful" and will try to offer a 5 gHz connection. A 5 gHz connection is faster, but has shorter range. The iAqualink only works on 2.4 gHz. Sometimes it helps to set up a guest network on your router and limit it to 2.4 gHz.
2. Go out to the iAqualink antenna and remove the cover (two Philips head screws) 
3. Slide the switch from "wifi" to "wired" and back to "wifi." This erases your old router settings.
4. Teach the antenna your new settings by going to the wifi settings on your phone. You will see one that says iAqualink. Sign on to that. A popup will show up with a list of wifi signals to choose from. Select yours -- remember this needs to be a 2.4 gHz signal and must be the one that your phone is already signed into.
5. Put the cover back on and wait a few minutes for it to connect.