Your Dream Backyard Is as Easy as...
Creating a plan will help you get the
most out of your landscape while
considering issues like cost, function,
aesthetic preferences, maintenance
requirements, water efficiency and
energy efficiency. You can tailor the
plan to suit your tastes and your checkbook.
Our pool contractors specialize in building and remodeling gunite pools (also called concrete pools or shotcrete pools). We are licensed contractors, and have been building custom pools, spas, hot tubs, and infinity pools for many years.
Once your pool is built, Crawford Pool and Spa will maintain your gunnite and chemicals so that you can enjoy it all year long. We make sure to stay in touch with you so you know when we've been to your home to service your pool.
pH is a measure of the acidity or basicity of a solution.
Muriatic acid is used to lower the pH of process water streams and swimming pool treatment.
Through alternating electrical polarities, the unit self cleans deposits from the cell's surface area, which will improve performance and increases the longevity of the cell.
A carbon footprint is the total set of greenhouse gas (GHG) emissions caused directly and indirectly by an individual, organization, event or product.
TDS (Total Dissolved Solids) is an expression for the combined content of all inorganic and organic substances contained in a liquid which are present in a molecular, ionized or micro-granular suspended form.
Tabs consist of a white crystalline powder, which has a strong "chlorine odour," is sometimes sold in a granule form for domestic and industrial use.
Chloramines are formed by the reaction of free chlorine with organic substances. Chloramines, compared to free chlorine, are both less effective as a sanitizer and more irritating to the eyes of swimmers. When swimmers complain of eye irritation from "too much chlorine" in a pool, the problem is typically a high level of chloramines.
Electrolysis is a method of using an electric current to drive an otherwise non-spontaneous chemical reaction. By running salt water through an electrolytic cell you can generate sodium hypochlorite (chlorine).
Low sodium levels will produce less chlorine and more nascent oxygen. In many cases even low salt levels
may supply adequate chlorine levels. Levels below 1,500 ppm may cause premature cell degradation
because of highly elevated nascent oxygen production. High salt levels will not produce much more chlorine
since the power supply will regulate the gram output of chlorine over 3,000 ppm. Avoid using salt with anti-
caking agents (sodium ferro cyanide, also known as YPS or yellow prussiate of soda). Filling agents can
cause some discoloration of plumbing fittings and surface finishes in pools. Typically, 99.8% pure NaCl,
sodium chloride is recommended. The preferred and recommended salt is an evaporated, granulated, food
quality, non-iodized salt with no additives. Consult your salt supplier. Other acceptable salts for industrial
applications are rock salt, calcium chloride, potassium chloride, sodium chloride, iodide, bromide, seawater,
brine and brackish water.