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Featured Videos

Pool Returns Up or Down? It Definitely Makes a Difference!

Which Pool Chlorine Is Best? Liquid, Cal-Hypo, Tabs, Dichlor & Salt Compared

Pool Phosphate Explained: & Finally A Good Solution

Salt Pool vs Chlorine Tablets: Which Is REALLY Better? A Pool Pro Settles the Debate

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Featured Articles

How to Make Your Pool More Efficient With a Variable Speed Pump

By Deep End Frank What if your pool could have circulation for more of the day, more opportunity to filter the water,…

Chlorine Bible, Which Chlorine?

Which Swimming Pool Chlorine Is Best? Liquid Chlorine, Cal-Hypo, Tablets, Dichlor and Salt Systems Explained Pool owners frequently ask me which type…

Top Algaecides for Chlorine Pools: Pros and Cons

Algae Control Options for Chlorine Pools: Uses, Pros, Cons, and Common Watch-Outs Most pool owners reach for algaecide too fast. In a…

Pool Returns Up or Down? It Makes a Difference

Pool Returns Up or Down? Why This Simple Adjustment Can Improve Circulation, Reduce pH Rise, and Even Control Pool Temperature Most pool…

Pool Phosphates: I Finally Found the Right Solution

Phosphates Don't Cause Algae... They Fund It. I don't get excited very often about pool chemicals. In fact, if you've followed me…

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Pool Knowledge Base

Everything you need to keep your pool clean, clear & simple.

Honest pool help from Deep End Frank — water chemistry, repairs, videos and guides built for real pool owners.

Latest Videos

Watch & learn

Fresh from the Deep End Frank YouTube channel.

Winter Pool Chemistry: How Cold Water Damages Plaster (LSI Explained) 8:38

Winter Pool Chemistry: How Cold Water Damages Plaster (LSI Explained)

October 18, 2026
Cut Pool Pump Electric Costs + Wi-Fi Automation | Moov MP3AI 7:36

Cut Pool Pump Electric Costs + Wi-Fi Automation | Moov MP3AI

October 12, 2026
Pool Losing 1,000 Gallons a DAY! Identifying and Verifying Massive Leak 5:13

Pool Losing 1,000 Gallons a DAY! Identifying and Verifying Massive Leak

October 10, 2026
How to Adjust & Re-Cam a Pool Valve Actuator | Pool Valve Fix 8:26

How to Adjust & Re-Cam a Pool Valve Actuator | Pool Valve Fix

October 3, 2026
Is 3 PPM Chlorine Enough? The CYA Ratio & Hidden Chlorine Reserve 6:49

Is 3 PPM Chlorine Enough? The CYA Ratio & Hidden Chlorine Reserve

September 29, 2026
Is Cyanuric Acid (CYA) Bad? Chlorine Tabs, Salt Pools & Winter Care 6:02

Is Cyanuric Acid (CYA) Bad? Chlorine Tabs, Salt Pools & Winter Care

September 27, 2026

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