Pumps are available in both submersible and external (out-of-pond) models. For smaller pond (up to 1000 gallons of water), a submersible pump is more economical and practical option. Submersible pumps can be placed directly in pond and require relatively little installation. They are free of distracting noise, and for smaller ponds, can easily be utilized to drain your pond (if you hook up a hose to output flow).

In old days, main disadvantage of submersible pumps was that pump seal could rupture and release oil coolant into water. However, this is not case nowadays, because newer pumps are magnetic-driven, and no longer require coolant. “Mag-driven” pumps are slightly more expensive, but they have added advantage of consuming less electricity.

Pumps are sized by gallons per hour (GPH) output at one foot of lift or height. Manufacturers usually offer charts that break down power of each size pump according to incremental heights of one foot. It is recommended that you circulate your body of water at least once every 2 hours. Therefore you will need to size your pump to ensure that it has half GPH rating as volume of your pond in gallons. For example, if you have a 1000 gallon water feature, you will require at least a 500 GPH pump.

Ahh. Spring arrives with beautiful twittering of birds preparing their nests for unborn. What - can't hear them? The low rumble of lawn mowers not only drowns out natures' symphony, but also disturbs skittish wildlife and sleepy neighbors.

According to Environmental Protection Agency, some older gas-powered lawn mowers produce in one hour as much air pollution as a new car does in 11 hours. Lawn mowers newer than 1996 have to comply to new exhaust emission standards, which is a fantastic place to begin. However, these standards are not yet satisfying for health of world.

Gasoline-powered mowers produce a cut that results in greater water loss and increased disease problems in lawns. Although many are now made with 4-stroke engines (much less polluting than 2-stroke engines), they still produce emissions.

There is a returned interest in push mowers due to environmental awareness of gas engine pollution and electricity use. Typically, crowded cities are resulting in smaller lawns, reducing need for large, heavy mowers. Push mowers are light and easy to operate and, being much smaller, take up less storage room and do not pollute. These mowers are actually quite cheap and many stores are rising to meet increased consumer interest. We have read that 7-blade models are considered better than 5-blade models.