Unsure Of Stage Of Cycling

[SteveVenezia]

Hello,

Last week I bought a 160 litre tank and filled it with water and new gravel. I added some de-chlorinator and some media from my old small tank - some gravel, some rocks covered in algae and some plants.. also covered in algae. 1 day after that I added my hardend zebra danios (2 of them) and they've been swimming around quite happily.

It's now been a week since first setting it up and I've just taken the following water readings:

Nitrate: 30 mg/l
Nitrite: 0 mg/l

KH: 20 d
GH: 21 d

pH: 8.4

The guides on this forum say I should "Inject carbon dioxide (CO�), perform water changes with RO (Reverse Osmosis) water" so I'll probably do that. Based on these readings, can anyone guess at where my tank is in the cycling process? I know I should have been taking readings since day 1 but I forgot to buy a sampling kit last week

 

[martyn21uk]

We need to see your results for ammonia to be sure but it by having 0 nitrite you look to have a cycled tank. Be aware though that your filter is only cycled to deal with the waste of 2 zebra danios. therefore add fish only a few at a time on your way to a full load. You may experinece the odd mini cycle along the way but keep testing and do pwc's if your readings for ammonia or nitrite go above zero.