onghm

Thanks a lot guys. So, the test kit could be the culprit. I will try to get Salifert since it got mentioned quite a lot in this forum.

Hi, I just started this hobby about 3 to 4 months back. Have been following this forum closely and enjoying it Currently have been puzzled with my NO2 reading. My NO2 reading for my 2-month old tank has been constantly @ 0.05 ppm. While Ammonia and NO3 are both 0, ie undetectable I tested the water paramters weekly. Tank detail as follows :- Tank dimension : 2ft (L) x 1.5ft(W) x 1.5ft(H) Tank volume : approx 34 US gallons or 128 litres 10kg of liverock about 1.5 cm of #3 sand 1 coralife 10K 36W PL 1 coralife actinic 03 36W PL 2 powerhead @600l/h diagonally opposite each other pointing towards surface in centre of tank. 1 eheim 2213 2213 contents top down :- Chemical - poly filter Chemical - chemipure Chemical - poly filter Mechanical - JBL symec synthetic filter floss Mechanical - eheim blue coarse mech filter Mechanical - ceramic rings, about 4cm to trap larger detritus As you can see, my 2213 basically served as mech and chem filteration. I'm leaving all the biological filteration to the 10 kg of liverock in tank. Tank Occupants as follows :- 1 damsel 1 blue tang 2 cleaner shrimps 1 goniopora 1 yellow polyp 1 daisy or starburst polyp 1 button polyp 1 green flourescent mushroom 1 hard tube coco fan worm 1 tube anemone All occupants look happy to me. Do I need to be concerned with 0.05 ppm of NO2 ? How can I drop it to 0 ? I'm suspecting I might not have enough real estate for biological filteration. Could easily add some bio media into 2213. But at the same time, I'm reluctant to turn it into a nitrate factory. Any suggestions or comments ? Thanks

Hi Tanzy, I'm using JBL PH testkit. The color I got is quite orange Probably 7.4 to 7.6 thanks

Hi, Currently I'm using DI water to topup the evaporated water in main tank. Observed that the PH of my DI water is quite low. Do I need to raise its PH to 8.3 (using seachem liquid marine) before adding to main tank ? Thanks