Join Date: Aug 2016
Location: Saigon - Vietnam
Water parameters and algae and change...
My tank is well cycled but hairy algae thrive, i have tried a blackout during 2 whole days (48h) and added liquid carbon (locally made product, not name brand) daily during 8 days but got no result.
Nitrite rate measured with API colour test: 0
NO3 rate measured with the Sera colour test: close to 0.
PO4 rate measured with Sera colour test: close to 0.
The above measures are obtained consistently over time for the 3 last weeks.
No Trace elements added since long.
I don't measure the other parameters because I really don't want to fill my undertank cabinet with chemicals... But the pH is likely acidic and the water is fairly soft give the analysis of the residence's swimming pool water supplied by the same water company.
dimensions of the tank are : 120 x 40 x 40 in cm.
Population: 3 mature trigogaster lalius, 15 cardinal neons, 9 espei rasboras, rougly 50 boraras urophtalmoides, 2 empire gudgeons, 1 red whiptail pleco. They are fed 2 daily, they are fairly well fed but not overfed.
the soil is mostly made of artificial made black granulates "Contro soil" from Marfied (little known outside Asia) and some grey_green clay at the bottom.
i have never added any N-P fertiliser into the water. Potassium is added frequently to combat the holes on the leaves disease. I stopped adding the fertiliser assumed to contain only Trace elements 3 weeks ago.
the tank is lit with a 2000 lm led fixture 8h a day.
What is wrong with it ?
Besides, with this water, do I still need to change water ?
Last edited by Tran; 10-12-2016 at 02:50 AM.
Reason: light and fertilisers