[delta66]

Τελικα ηταν καλες οι μπριζολες απο το χασαπικο?



Λοιπον, μια και πιασαμε τη sera, οδηγιες για πιο υπολογισιμη απονιτροποιηση με siporax απο τη sera. (προσοχη στα bold και υπογραμμισμενα)
Και τη Ferrari και το 2CV, αυτοκινητα τα ονομαζουμε, αλλα δεν τρεχουν το ιδιο.
Παρομοιως μπορουν να λεει στο διαφημιστικο της η καθε εταιρεια, οτι στο βιολογικο υλικο της γινεται και απονιτροποιηση, χωρις να διευκρινιζει ποσο γινεται και σε τι φιλτρο μεσα.
Σιγουρα λοιπον γινεται, αλλα το ποσο γινεται ειναι αλλο θεμα.

How can I build a bypass filter for denitrification?
Hello,
Could you please give me a suggestion about building and connecting a bypass filter with sera siporax for denitrification?

The construction principle is actually very easy: All you need is a chamber equipped with intake and an outlet connectors, which is filled with sera siporax (0.5 liters per each 200 liters of water). For example, you can use a canister filter that you do not need any more otherwise. It is then operated passively, i.e. without the built-in motor. You can even take out the impeller entirely as to improve water flow.
The bypass filter is connected to the biofilter by splitting the biofilter outlet via an adjustable T-piece in a way that about 1 % of the outlet water are directed into the nitrate filter, the rest is of course directed back into the aquarium, just like the nitrate filter outlet.
Both filters can also be internal filters, they are then connected in a similar way. It is important that the nitrate filter, has no direct connection to the air and is operated with a slow water flow as to ensure low oxygen conditions.


Best regards
sera GmbH
Dr. Bodo Schnell

http://www.sera.fr/fr/services-sera/...ion-bauen.html

Quick or slow water flow in the filter?
Hello,
What would you recommend? Slow water flow (minimum pump performance ensuring the bacteria that fixate nitrite and nitrate have longest possible contact to the water inside the filter medium), or a normal to high flow rate ensuring the water body is well provided and "blended" with nutrients?

in fact, a cross of the two would be optimal - in case of high nitrate pollution, this can be achieved by a combination of a 'conventional' biofilter (typically with flow rates in the range of several hundred liters per hour) and a special nitrate removing slow flux filter with flow rates of a few liters per hour. This ensures proper pollutant oxidation to mostly untoxic nitrate within the biofilter, along with good oxygen enrichment and water agitation, while the slox flux filter breaks down the formed nitrate into harmless nitrogen gas, which then escapes into the atmosphere. A compromise is possible in so far that filters equipped with sera siporax (recommended: 1 liter sera siporax per each 100 liters of water) and moderately high flow rate (up to approx. 400 l/h) rather good denitrification will take place also within the biofilter.

Best regards
sera GmbH
Dr. Bodo Schnell

https://www.sera.de/en/sera-service/...he-filter.html