Honestly i was shock with sudden NO3 last time .. and went bought 500ml NP Bio Pellet .. hehehe .. but im not install its yet .. maybe this weekend.

Beside that, i'll remove current RDSB so i'll have a better space inside the cabinet. Other than that its good to go. I'm also added more sand bout 5kg... so now its about 6" deep =D

As for 2days ago the NO3 reading already down to 25ppm .. good for me ;) .. maybe its related to sand top up i did earlier.

So lets see what this product can do for me ;)