PHOSCLEAR®

Time-released aluminum sulfate water treatment for effective phosphate control and algae controlPHOSCLEAR® - Buffered aluminum sulfate water treatment for effective phosphate control and improved water clarity

How much PHOSCLEAR® is needed to treat a pond?

There are really two dose rates for PHOSCLEAR®:

  • For phosphate control you add 20 to 40 lbs per acre foot of water.  For severe PO4 levels above 1 PPM, double or triple the dose will be required.
  • For clarification, the minimum dose of PHOSCLEAR® is 0.25 lbs per 1000 gallons of water.  Clarification is an inexact science and depends on the # of suspended dirt particles per cubic foot of water.  Some ponds respond very well to the minimum dose.  Other ponds require 2X or 3X that amount.

For smaller ponds, you apply ½ cup per 1000 gallons.  So a 5000 gallon pond would use 2 ½ cups (or 5 X ½) per treatment.

How is the product packaged?

Phosclear® is available in 4 lbs plastic jars or 40 lbs (five gallon) pails.

Is the product safe for fish, fish and koi ponds, and aquatic plants?

When used as directed, the product is safe for fish and aquatic plants.  It effectively controls phosphate levels and agglomerates suspended dirt particles to leave the fish or koi pond sparkling clear!

Koi Pond Cleaning ProductKoi Pond Cleaning Product

How is the product applied? Application Instructions.

Time-released aluminum sulfate water treatment for effective phosphate control and algae controlThe pH of the pond must be checked!  We recommend that pH be between 6.5 and 8.2.  The reason is that – in very alkaline ponds (above pH 8.2) the Aluminum in these products can react with the alkaline groups to form Aluminum Hydroxide which can be toxic to fish.

Also if the pH is low enough to be threatening to fish (below 6.5) a PHOSCLEAR® addition –despite being buffered – can slightly lower the pH enough to harm fish.

Phosclear® can be sprinkled as a powder over the water surface or introduced through a waterfall or skimmer intake or sprinkle in the prop wash of a motor boat. 

The water column should be milky white once all of the product is added.  Once done with the addition, turn off all waterfalls and aerators for 12 to 24 hours to allow the suspended dirt particles to agglomerate and settle to the bottom.

We DO NOT recommending applying PHOSCLEAR® or any pond treatment on hot, sunny days.  This is when the Dissolved Oxygen (D.O.) in ponds is the lowest and when fish are under the greatest stress.  If you feel that you must perform a treatment then add the product in the early morning as the sun is rising and the water is cooler and D.O. is higher.

NOTE:  PHOSCLEAR®/Aluminum Sulphate does not affect Dissolved Oxygen (D.O.) levels in water.

How often do I need to apply the product?

For ponds with high phosphate levels or a lot of suspended dirt particles, additional treatments may be required after the first application. We recommend additional treatments every three (3) days until desired results are achieved.

Thereafter, the products should be applied every 4 to 6 weeks as routine maintenance.

Use PHOSCLEAR® to keep ponds clean and clear! - Buffered aluminum sulfate water treatment for effective phosphate control and improved water clarity.