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26<br />
Technical equipment<br />
Phosphate is required only in little<br />
amounts as a pl<strong>an</strong>t nutrient. In case<br />
of accumulation it often causes<br />
algae problems. <strong>sera</strong> phosvec Gra -<br />
nulat removes phosphate easily,<br />
safely <strong>an</strong>d with a long-term effect.<br />
<strong>sera</strong> biopur <strong>an</strong>d <strong>sera</strong> biopur forte<br />
as well as <strong>sera</strong> siporax allow <strong>set</strong>tling<br />
of purification bacteria <strong>to</strong><br />
break down pollut<strong>an</strong>ts biologically.<br />
These filter media are recommended<br />
if only little breakdown perform<strong>an</strong>ce<br />
is required, e.g. in densely<br />
pl<strong>an</strong>ted <strong>aquarium</strong>s with few fish. As<br />
shown on page 24, <strong>sera</strong> siporax<br />
has a biological breakdown perform<strong>an</strong>ce<br />
that is 34 times higher<br />
compared <strong>to</strong> ceramic filter media.<br />
Therefore, <strong>sera</strong> siporax has <strong>an</strong><br />
excellent price vs. perform<strong>an</strong>ce<br />
ratio.<br />
Filtration according<br />
<strong>to</strong> nature
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