skimmer panel 13 because the floats 14 are positioned on the in flow side of the skimmer panel and spaced off the skimmer panel the buoyancy and vertical positioning of the skimmer panel is dependent only on the in flow side of the skimmer panel 13 if there is no water against the out flow side of the skimmer panel 13 the skimmer panel could still float depending only on the water level on the in flow side the skimmer panel 13 is a front side buoyancy skimmer because all the buoyancy required to enable the skimmer panel 13 to float is due to the floats 14 attached to the front side of the skimmer panel 13 the skimmer panel 13 has a plurality of load rollers or wheels 22 which allow the skimmer panel 13 to move vertically in the tracks 17 with minimal friction at the top and bottom corner of each end of the skimmer panel 13 is a centering roller 23 which prevents friction between the skimmer panel and the side walls of the vault 11 the load rollers are located between the top and bottom of each end of the skimmer panel 13 the load rollers 22 supports the panel 13 against the force of the water entering the vault 11 and prevents friction between the tracks 17 and the skimmer panel 13 the rollers have a low friction design and may be made of delrin mounted stainless steel axles the skimmer panel 13 has a seal on each side thereof to prevent the passage of lighter than water liquids such as oils the seals will be typically be made.