quitters said:
ok thanks dam
but adding plants is fine even if its a fishless cycle? (using a single shrimp) will this make for a lesser bio-load-buffer-thing-a-majig?
Adding plants
increases your bioload. All bioload means is the amount of waste products your tank can consume. The higher bioload, the more fish you can stock (up to a point). This is a mixture of the bacteria in the tank, and any live plants as well.
Adding plants is fine. I wouldn't completely cover every inch with plants at the beginning, but a good amount will be fine. You have to remember that plants are actually "better" than the beneficial bacteria that we are trying to grow during the cycle. They absorb ammonia or nitrAte (the part that normally sits in the tank until a PWC), and do not use much oxygen, while they are putting some oxygen back INTO the tank.
Compare this to the bacteria, which cannot do anything with nitrAte which builds up in the tank, readily use oxygen, and can be killed much easier by accident (adding straight tap water with chlorine will kill the bacteria, but the plant won't mind for example, even low amounts of antibacterials will not outright kill the plant, but the fish might die). But remember also plants need more varied nutrients than do bacteria, and in the absence of light (say during a blackout period to get rid of algae), the plants will slow their ammonia uptake, while the bacteria will still be cranking along.
So ideally you would want a really heavily planted tank, and as some members on here have posted, you could possibly NEVER have a cycle, since the plants are directly using the ammonia. This way you have a safety mechanism in place if one or the other suddenly dies off because you will still have a good amount of beneficial bacteria (though not as much as a tank without plants).
I chose to wait until the cycle was completed before adding live plants, but if I had to do it over again, I would add the plants at the same time the cycle is starting. There will be enough free ammonia in the water for the bacteria to thrive, even in a well planted tank.
HTH