Sunday, May 24, 2015

Red-Brown Pool Water

Red-Brown Pool Water

A reddish or brown tint in the water is due to iron or manganese. Iron can exhibit brown, dark red, or a black-brown color in the water. Manganese can show as a brownish-black color in the water. This can happen due to the source of the water filling up the pool or it could also be due to the erosion and or corrosion of circulation components, including the pump. Manganese may be present as a result of source water contamination or the use of certain water treatment chemicals. To remove the red-brown tint from pool or spa water, a sequestering or chelating agent is added to the water to tie up the metallic ions and reduce the possibility that they will stain surfaces. The filter should be operated to assist in removal of the suspended materials. After 24 hours the water should be retested for metals. 

www.bobcatblue.com

469-400-4404

Tuesday, April 14, 2015

Scale on Pool Surfaces

Scale is a crusty white deposit that can result in the rough pool and spa wall surfaces, reduced circulation flow, and calcification of the filter media. Scale is usually dirty, giving it a grayish color. Scale on pool surfaces can cause abrasions on the users. Excess calcium hardness and poor water balance result in scale formation. Usually high pH and alkalinity with high levels of calcium hardness will result in the formation of scale. If your pool has a calcium scale (calcium carbonate) it is more likely to occur at locations where there is water evaporation or higher temperatures. Heaters can form scale because calcium carbonate is less soluble in water as the water temperature increases. This is because the heater becomes less efficient as scale forms on the heat exchangers. If it makes it way into the plumbing, the water flow can be restricted resulting in cloudy water. To prevent all of this the alkalinity, calcium hardness, pH and TDS must be brought into proper balance. Calcium hardness can only be lowered by draining some of the pool water or evaporation. That is why your calcium should always be on the low end of its proper range. (200-400) ppm. Ideal range is 300ppm. For more information you can visit www.bobcatblue.com or talk to one of our representatives at 469-400-4404

www.bobcatblue.com



Wednesday, April 1, 2015

Cartridge Filter Cleaning in Celina, Texas

Bobcat Blue Pool Service cleans all D.E. and Cartridge pool filters. For more information please visit www.bobcatblue.com or you can reach us at 469-400-4404



Thursday, March 26, 2015

Swimming Pool Volume, Surface Area, Turnover Rate, Flow Rate other conversions.

AMOUNT CONVERSIONS
Ounces to Pounds: Ounces/16 = Pounds
Fluid Ounces to Gallon: Fluid Ounces/128 = Gallons
SURFACE AREAS
Circle: 3.14 x radius x radius = Square Feet
Rectangle/Square: Length x Width = Square Feet
Triangle: (Length x Width) / 2 = Square Feet
POOL VOLUME
Surface Area x Average Depth x 7.48 = GALLONS
Average Depth = (shallow depth = deep depth) / 2
TURNOVER RATE
Pool Volume / Flow Rate / 60 = Hours
FLOW RATE (MINIMUM)
Pool Volume / Turnover Rate (hours) / 60 = (GPM)
FILTER SURFACE AREA

Flow Rate / Filter Media Rate = Square Feet of Filter Surface Area Needed



Friday, March 13, 2015

D.E. and Cartridge Filter Cleaning


DIATOMACEOUS EARTH (D.E) / CARTRIDGE FILTERS


Diatomaceous earth (D.E.) removes the smallest particle size of any pool and spa filtration device. Tiny fossilized skeletons of small sea plankton (diatoms) are used to trap undissolved material. D.E. filtration is said to be in the 2 to 6 micron range. The D.E. is held against a grid device or septum by the movement of water. The grid is covered with a cloth like material and the D.E. forms a "cake" or coating on the cloth. Water passes through the D.E. with the suspended material trapped in the channels of the skeletal material. / D.E. is considered to be a disposable filter media. When the pressure reaches 10psi (70 kPa or 1 bar) above the normal cycling starting pressure, the filter must be cleaned. In most cases it would need a backwash, but we manually clean our filters every 3 months / 4 times a year during the filter operation. We charge $78.00 for Cartridge and $99.00 for D.E. filters. 469-400-4404


Celina Pool Service

BobcatBLUE Pool Cleaning Service
Celina, Texas 75009

469-400-4404


www.bobcatblue.com

Wednesday, March 4, 2015

TOTAL ALKALINITY / CELINA POOL CLEANING SERVICE 75009

WWW.BOBCATBLUE.COM

Total Alkalinity
Chlorine efficiency is affected by pH. The change in pH is governed by total alkalinity. Maintaining proper total alkalinity is therefore important for proper disinfection control. It is also important for maintaining water balance. If the pH is not at the correct reading you must fix the alkalinity first. 

Calcium Hardness
Adding hose water, evaporation and the addition of pool chemicals cause the calcium concentration to increase. Heavy rainfall, system leakage and source water low in calcium hardness result in a decrease of calcium concentration. Calcium hardness should be tested at least once a month. (200-400ppm) and 300ppm is the ideal range for your calcium hardness. (www.bobcatblue.com) / click "chemical" to see the complete ideal chemical chart for ideal ranges.

Cyanuric Acid (CYA)
Cyanuric acid is increased by manual addition or by the use of stabilized chlorine. CYA is decreased by dilution. If a form of stabilized chlorine is used, CYA should be tested weekly.

Other Testing
Testing for nitrates, phosphates, metals and TDS should be performed on an as-needed basis. Testing monthly will in most cases be sufficient to spot any developing trends, allowing the pool operator time to respond accordingly. Testing for salt concentration, hydrogen peroxide and potassium monopersulfate should be performed according to existing conditions. (for more information visit www.bobcatblue.com)


469-400-4404