My neighbor has these fish in her pool to keep it warm...what are they?

The fish is most likely an 'Ecosavr', a cool dispenser for another product 'Heatsavr', which is traditionally used in commercial pools with an expensive auto dispenser.
Evaporation is one of the main forms of heat loss from swimming pools and spas. 'Heatsavr' will lower humidty as well as evaporation. As a rule it takes money to buy heat, and heat to evaporate water, so slowing evaporation will lower humidity, as well as heating costs. Make sense?
Regardless whether your using cost effecient solar or paying for gas-heat, our main issues still comes back to not wanting the pool to cool down. 'Heatsavr' is an effective liquid pool cover that greatly reduces heat loss and evaporation from your pool surface, its made of simple bio-degradable ingredients (alcohol-based) that won't interfere with your water balance, works for salt pools, and is not a danger to pets or kids.
A single fish does about 400sq feet, and will last a month, making it very affordable for private pool owners of all sizes and shapes-pools not the owners ;-)

My pool has stains on the liner that I didn't have last season, what can I do?

Stainfree is an ascorbic acid product, similar to those big chewable Vitamin C tablets you get from the drugstore. The Stainfree product from Natural Chemistry is ideal for treating staining to vinyl pool liners and fiberglass pool surfaces. A safe and people friendly alternative to harsh chemicals typically used to treat stains. On the plus side, Stainfree does not create any residual phosphates in your pool water, making it an excellent stain fighter without adding food for algae.

Pool Perfect by Natural Chemistry

Pool Perfect is an all natural enzyme product that biodegrades organic contaminants to reduce maintenance and produce clear, perfect water.

Why use Pool Perfect?
- eliminates skin and eye irritation
- eliminates strong chemical odors
- no scum line
- clean pool filters
- reduced pool maintenance
- makes water feel soft and silky

HELP! My pool has gone green! What is the quickest way to clear it?

Here is an excellent treatment for a pool with bad algae bloom going on:

Step #1- Add Pool Perfect from Natural Chemistry, Wait One Hour.

Step #2- Shock with heavy chlorine (12% in liquid form), Wait Four Hours.

Step #3- Add Pool 1st Aid from Natural Chemistry, leave overnight.

Next day vacuum and backwash. RESHOCK if neccesary.


** This set of steps is an alternate treatment to an algicide and shock combination**

What do natural enzymes do for my pool water?

Enzymes are naturally occuring proteins that 'catalyse' or speed up the natural breakdown of organic materials ie: dead algae, pollen, bather wastes etc. Enzymes breakdown organic materials into smaller and smaller molecules until they are finally reduced to their elemental forms such as carbon dioxide and water. No other compound breaks down organic waste as efficiently as natural enzymes.

Powerful Water Clarifier - PowerFloc

Bioguard Power Floc

Clarifier

This product is excellent to clear excessively cloudy water after a rainstorm or a period of time when your pump wasn't running (perhaps while you were away on vacation). Very powerful flocculent Makes water clear and sparkling Settles suspended particles to bottom for removal by vacuum The greater the debris in the water, the faster it works Can be used safely in all pool types