Web aquarium literature agrees that any changes to systems of fertilization in the aquarium plant to be weighed against long periods: weeks or months, not days. For this cerco sempre di apportare le modifiche gradualmente a meno che non si verifichino necessità di intervento immediato e drastico.
Il tentativo di riduzione effettuato in agosto è stato valutato dopo circa un mese e mi aveva portato a far ripartire la fertilizzazione con CO2 pur mantenendo ridotto di 1/3 il cambio dell'acqua.
Nelle due settimane successive al ripristino della CO2 ho notato un notevole aumento delle alghe dette "staghorn" e anche delle dust sui vetri. Dopo un mese dal ripristino della CO2 queste ultime sono notevolmente diminuite ma le staghorn rimangono presenti su alcuni tipi di piante in particolare sull'eleocharis che è molto sofferente.
Più che all'aumento della CO2 (che disadvantage should) assume that the algae is caused by an imbalance in the ratio N / P to the detriment of P. Then I'll have to slightly increase the dose of phosphate to evaluate this hypothesis.
When I restored the CO2, according to previous experiences, I estimated three weeks in the life of each vessel and then, as I will use two one-week delayed the start of the second to reach the average values \u200b\u200bare more stable. But I had the foresight to mark the date on the containers to carefully assess the durability and are able to establish that the first container has generated CO2 for 29 days. So if the thing will be out of phase will be repeated refills of 15 days in order to reduce the oscillations of CO2 as the following graph.
A positive surprise was that relating to diatoms. This type of "algae" because hard water has always been present in my aquarium covering the rocks and plants as tough as Anubias. The problem appeared as a dark patina very unpleasant to see. Now, probably due to reduced water change it seems that the dark patina has transformed into a substance more clear that the snails and shrimp in the aquarium are able to clean very quickly.
The result is that the leaves of anubias are coming fast and clean dark patina on the rock is pian piano sbiadendo.
In tutto questo tutti i pesci e gli invertebrati sembrano godere di piena salute senza alcuna reazione alle diverse condizioni.
by Rudi Giacomini Pilon 
