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<p>45cm/18&rdquo; diameter.</p>
<p>Inspection bowls are ideal for temporary viewing, medication baths and photography of koi.</p>

<p>The Green Matala can follow thereby trapping a medium size particle. Both Green and Black clean out very easily by simply shaking the pieces out before draining the sump. When you use the Black or Green Matala? for solids filtering you may use the garden hose to spray clean them. The dirt falls off very easily.</p>
<p>A good biofilter needs a lot of surface area with open spaces between for good aerated water flow. A high surface area is useless if the passageways are so small that water flow cannot penetrate.</p>
<p>R-Matala will naturally wedge in place without any need for support. Four sequential densities can be perfectly employed to achieve maximum solids / bio-filtration. Each roll is 6 inches thick with a tremendous potential to trap dirt and yet is super easy to clean. Simply drain the waste out your bottom drain and gently pour pond water over the R-Matala</p>
<p>Seven diameters are available: 22&quot;; 24&quot;. <strong>Other diameters are available upon special request.</strong></p>

Our Matala Air Discs are available in two sizes. 9 inch diameter and 12 inch diameter. They are designed for the wastewater treatment industry to very high standards. The air pore size in the rubber membrane is designed to give a medium size bubble which will not put any significant back pressure on the system. In fact this special air disc only adds less than 6 inches of water depth back pressure. The 3/4" male thread makes it easy to attach to your feed line.