Coral Seas YO-4, Yellow Out Swimming Pool Chlorine Shock Enhancing Treatment-4 lbs
91
Adams Parker
Product Images
Product Features
- MULTI-PURPOSE: Raise the levels for chlorine, water hardness, and pH in your swimming pool giving you crystal clear water.
- INCREDIBLY STRONG: Due to its high percentage of chlorine, Super Shock is very effective and efficient for a quick chlorine boost.
- MIX BEFORE YOU FIX: Add this powder to a bucket of water before you add it to your pool. Add a 1 lb bag per 10,000 gallons of pool water.
- BEAT THE GREEN: Kill the algae in your swimming pool by adding 3 bags of shock per 10,000 gallons of pool water.
- WORKS BEST AT NIGHT: Maximize performance by adding this shock to your pool at night. Wait to swim 8 to 10 hours after application.
- MULTI-PURPOSE: Raise the levels for chlorine, water hardness, and pH in your swimming pool giving you crystal clear water.
- INCREDIBLY STRONG: Due to its high percentage of chlorine, Super Shock is very effective and efficient for a quick chlorine boost.
- MIX BEFORE YOU FIX: Add this powder to a bucket of water before you add it to your pool. Add a 1 lb bag per 10,000 gallons of pool water.
- BEAT THE GREEN: Kill the algae in your swimming pool by adding 3 bags of shock per 10,000 gallons of pool water.
- WORKS BEST AT NIGHT: Maximize performance by adding this shock to your pool at night. Wait to swim 8 to 10 hours after application.
Product Specifications
| Brand | Coral Seas |
| Item Weight | 4 Pounds |
| Item Form | Powder |
| Product Benefits | Controls Algae |
| UPC | 731524222332 |
| Number of Items | 1 |
| Unit Count | 64.0 Ounce |
| Product Dimensions | 6 x 6 x 8 inches |
| Item Weight | 4 pounds |
| Manufacturer | Coral Seas |
| ASIN | B002WKF9SO |
| Item model number | YO-4# |
| Is Discontinued By Manufacturer | No |
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Product Price History
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Good price. We live in TX and are constantly fighting algae, especially this summer. This is much cheaper than Leslie’s Pool Supply. The difference in price is staggering.
Works great for good price. Great value and works well
Amazing Results. If you are having an algae problem in your pool, this is the product you want. This past HOT summer was a challenge to keep the algae problem under control. Even with regular chemical balance checks and regular chlorine treatment, the algae still reared its ugly head. Then it was Yellow Out to the rescue. I applied the product as instructed and within 24 hours my problem was gone! I have been using Yellow Out now for 3 summers and it is worth every penny when it comes to pool maintenance, I highly recommend this product to all pool lovers.
Worked great. Killed the yellow algae in my pool. Only thing bad about it was it lowered my chlorine level, and raised both my PH and Alkaline levels extremely high. I added 8oz of Murietic Acid to my pool water and it worked to lower the PH and Alkaline levels back to normal.
Does the job on mustard algae. Worked fine even though I did not shock the pool as the directions state since I have a salt water pool. Noticeable improvement in 48 hours, everything is clear within a week.
did not work good in my salt water pool. did not work good in my salt water pool
Took from green to blue in 2 days. Great product! Helped us FINALLY kill the mustard algae we have had in pool for years. Helps the chlorine work better. Great price! It is twice this at the store! Water is cloudy after so a clarifier is needed but very happy with how it killed the algae. For our large pool that is 40/20 and 10 feet in deep end we used all four pounds of yellow out.
Never Fails. I’ve bought this product a few times over the years and it continues to amaze me. I started having some yellow algae show up with a cloudy pool I just could not beat and this product cleared it up in 2 days time. Jacked up the chlorine level and dumped it around the rim of my inground pool and I could see it activate immediately. Definitely follow directions when it comes to how much chlorine/shock you will need. 100% worth the money.
Works great, used for years. I went on a vacation and my pool person had a medical emergency, no one touched the pool for 6 days. I have a huge tree over the pool, and live in AZ, temps were 110 every day. When I returned, around noon,The Pool had thousands of leaves in it, I could not see bottom, water was an iridescent green. Pretty much the nightmare I expected. But I had my secret weapon ready. I got out all the leaves I could, added 1.4 lbs of yellow out (distributed across the pools service). Let pump run at full for 5m, added 2lbs shock and went inside (trying not to look at my poor pool). By 5pm I could see the bottom, it still had a green tinge to it. I got in and got all leaves off the bottom (took over an hour). But now it was really looking better. I let pump run over night. Next morning clear water, still a little green but what a difference. I back washed about noon. Added clarifier and another pound of shock. By 5pm it was 99% perfect. I felt so much better.This stuff is like an alge eraser when used with shock. I try to always keep it on hand, just in case a problem arises.
Works great, used for years. I went on a vacation and my pool person had a medical emergency, no one touched the pool for 6 days. I have a huge tree over the pool, and live in AZ, temps were 110 every day. When I returned, around noon,The Pool had thousands of leaves in it, I could not see bottom, water was an iridescent green. Pretty much the nightmare I expected. But I had my secret weapon ready. I got out all the leaves I could, added 1.4 lbs of yellow out (distributed across the pools service). Let pump run at full for 5m, added 2lbs shock and went inside (trying not to look at my poor pool). By 5pm I could see the bottom, it still had a green tinge to it. I got in and got all leaves off the bottom (took over an hour). But now it was really looking better. I let pump run over night. Next morning clear water, still a little green but what a difference. I back washed about noon. Added clarifier and another pound of shock. By 5pm it was 99% perfect. I felt so much better.This stuff is like an alge eraser when used with shock. I try to always keep it on hand, just in case a problem arises.
Works great, used for years. I went on a vacation and my pool person had a medical emergency, no one touched the pool for 6 days. I have a huge tree over the pool, and live in AZ, temps were 110 every day. When I returned, around noon,The Pool had thousands of leaves in it, I could not see bottom, water was an iridescent green. Pretty much the nightmare I expected. But I had my secret weapon ready. I got out all the leaves I could, added 1.4 lbs of yellow out (distributed across the pools service). Let pump run at full for 5m, added 2lbs shock and went inside (trying not to look at my poor pool). By 5pm I could see the bottom, it still had a green tinge to it. I got in and got all leaves off the bottom (took over an hour). But now it was really looking better. I let pump run over night. Next morning clear water, still a little green but what a difference. I back washed about noon. Added clarifier and another pound of shock. By 5pm it was 99% perfect. I felt so much better.This stuff is like an alge eraser when used with shock. I try to always keep it on hand, just in case a problem arises.
Incredible. A hose on our pool became disconnected while we were on vacation leading to a dark green pool when we got home. After shocking, it went from dark green to light green, however despite following all of the pool store recommendations (lots of chlorine both at high levels and for prolonged periods and algecide guaranteed to cover all forms of algae) we saw no further improvements. I researched and came to believe we likely had mustard algae – our pool store insisted that mustard algae almost never grows this far north (Wisconsin). I decided that I had nothing to lose by trying this anyways and within 24 hours the green was completely cleared!
Incredible. A hose on our pool became disconnected while we were on vacation leading to a dark green pool when we got home. After shocking, it went from dark green to light green, however despite following all of the pool store recommendations (lots of chlorine both at high levels and for prolonged periods and algecide guaranteed to cover all forms of algae) we saw no further improvements. I researched and came to believe we likely had mustard algae – our pool store insisted that mustard algae almost never grows this far north (Wisconsin). I decided that I had nothing to lose by trying this anyways and within 24 hours the green was completely cleared!
Excellent product. This is the only product I use for yellow and green algae in my pool . Works very fast amd always cleans the algae out.
Works like magic. I was dumping hundreds and hundreds and hundreds of dollars of chlorine into my pool trying to clear it. One bottle of this and it’s been clear now for six weeks! It’s like a miracle in a bottle! Highly highly recommend it to clear your mustard algae!
Works like magic. I was dumping hundreds and hundreds and hundreds of dollars of chlorine into my pool trying to clear it. One bottle of this and it’s been clear now for six weeks! It’s like a miracle in a bottle! Highly highly recommend it to clear your mustard algae!
Works great. We have mustard alge — Yellow Out works great
Better price than our pool store and works but takes some work. This past summer here in the south brought a lot of flare ups on algae. We used Yellow Out but ended up using Bioguard shock (non bleaching for our vinyl pool liner) to get “on top” of the problem and then the Yellow Out to follow. We know the yellow out brand from previous usage over the years and we purchased from this seller because of the price.
Better price than our pool store and works but takes some work. This past summer here in the south brought a lot of flare ups on algae. We used Yellow Out but ended up using Bioguard shock (non bleaching for our vinyl pool liner) to get “on top” of the problem and then the Yellow Out to follow. We know the yellow out brand from previous usage over the years and we purchased from this seller because of the price.
Worked as Intended on Mustard Algae. I followed the instructions on the container and this product completely removed the mustard algae from our pool. I would definitely recommend it.