Planted tank bga and nitrates help pls

Dragon3383

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First time poster after some help with bga and nitrates.

My tank has been running for a number of years and about 4 months ago I went fully planted with soil. My parameters have barely changed water wise and pH level still all the same and my fish loving life. My rainbow is 11 years old and some of my rummys are probably about 5-6.

My issue is bga has started breaking out. Lights are on 8hrs a day I don't dose ferts at present cos my plants growing too quick and look perfect and bubbling away.

My nitrates are hard to control I can dose 20ppm a day and they go within 24 hrs I here this could be a reason for bga. I'm after some help or suggestions to one combat bga and two how can I bump my nitrates so I don't have to dose loads daily.

Ammonia 0 nitrite 0 nitrates 0-20 a day.. pH 6.5-7 kh 4 gh 2 135l tank running a fluval 207 hugger lights and a fluval sky 2.0. injecting co2 at 2bpm. 15 rummy nose tetras one rainbow fish(doesn't like any other he's a lone wolf) & a pleco 2 nitrate snails 1 mystery snail.

Do you recon I could add more fish to increase my nitrates?

Any ideas on bga?
 

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