Calcium Hardness Increasers

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Deep Thinking

Articles & resources for pool & spa

Bag of ice melting on a hot pool deck.

How Much Ice Would It Take to Cool Your Pool? (We Ran the Numbers)

cool a pool
hot pool water
pool aerator
pool heat pump chiller
pool to hot to swim

How Much Ice Would It Take to Cool Your Pool? (We Ran the Numbers)

Dolphin Nautilus CC Plus

Dolphin Nautilus CC Plus Review: Good, But Dated (2026)

dolphin nautilus cc plus
robotic pool cleaner

Dolphin Nautilus CC Plus Review: Good, But Dated (2026)

Cal hypo granules, a jug of liquid pool chlorine, and trichlor tabs arranged on a pool deck for comparison.

Cal Hypo vs. Liquid vs. Dichlor: Pool Shock Compared

cal hypo
dichlor
liquid chlorine
pool shock
Shock

Cal Hypo vs. Liquid vs. Dichlor: Pool Shock Compared

Hose filling a pool with freshwater

How to Lower Cyanuric Acid in a Pool (and Why Most "Reducers" Don't Work)

CYA
cyanuric acid
lower CYA
pool stabilizer

How to Lower Cyanuric Acid in a Pool (and Why Most "Reducers" Don't Work)

Robotic Pool Cleaner and Solar Skimmer

Robotic Pool Cleaner Buying Guide: What Actually Matters in 2026

Aiper
Beatbot
Maytronics
Polaris
Robotic Pool Cleaner
Wybot

Robotic Pool Cleaner Buying Guide: What Actually Matters in 2026

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