Diatoms.
diatom algae image via reef2reef member
@Steven R
Diatoms are a brown dusty life form that consumes silicates. There is no avoiding Diatoms during their initial bloom. Leave it be. Let it go crazy. Before you know it, the brown stuff will soon start to change colors. Generally red, this is the start of the next stage!
Stage 5: Cyanobacteria
cyanobacteria image via reef2reef member
@Murfman
Cyanobacteria will now begin its course. Again you will let the slime just do its thing. This will be the nastiest of the stages. Cyanobacteria can gross some people out, especially if they catch a whiff of it. It is best to leave it be. It will start to clear up eventually. The clearing of the slime makes way for yet another stage.
Stage 6: Green/Brown algae
hair algae image via reef2reef member
@johnmaloney
If you have made it this far, give yourself a round of applause. This is the final “battle” of the cycle process. When the slime is gone you will see your first signs of plant life, algae! Green Hair algae is usually the type that you see, but some other types have been known to occur. This stuff will grow like mad. At this point you are ready to move on to the next phase.
The cycle is a long process in terms of hobbies. Find yourself a good rhythm for testing. Get yourself in the habit of staring for long periods of time. Practice observation by watching as life forms start taking foot in the aquarium. You will see things from dust sized particles to worms that reach a foot long. There really is no telling what could form in your tank. This is a great time to prepare for the animals you will get. Knowing how to describe things and being able to correctly test the water will help you get the information you need. Your parameters are perfect now. You are now ready to move on to the next section. You should actually study the next section during your cycle, since you will have quite a bit of time on your hands with all that waiting.
Cycles can be artificially induced, but it is always preferred to use as little foreign liquids as possible. Another thing you can do during the cycle is preparing your clean up crew and first fish, but be prepared to keep them quarantined for a prolonged time since the cycle is unpredictable.
