Originally Posted by Ingy
Nitrogen cycle explained:
You start the cycle by adding proteins to the system in the form of food. Food is eaten or rots and converts to ammonia. Bacteria convert it to nitrites and then nitrates. Algae consume nitrates and convert it back into proteins as more algae.
Cuc participate in 2 stages. They can eat leftover food and poop hastening the conversion to ammonia or they eat algae converting it back to ammonia.
In either case they 'liquefy ' nitrogen and create something your skimmer can remove as well as remove ugly algae.
Agreed. However there is another stage that is often looked over. This being stage two, phosphates. This is the stage you are in. It is the longest and most difficult stage. Just simply let it run it's course and test in a week. The CUC will help with the process. I would not suggest adding anything else until your phosphate has vanished.