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Question About Water Changes / Bba In My Low Tech Tanks

Discussion in 'Non-CO2 Methods' started by mexicatz, Aug 23, 2018.

  1. mexicatz

    mexicatz Junior Poster

    Feb 10, 2015
    Likes Received:
    Local Time:
    1:38 AM
    I currently have 2 low tech tanks set up. Both have small amounts of BBA that I have been dealing with for awhile. Both are pretty heavily planted with the plants listed

    20 gallon long:
    finnex stingray w/ 1 piece of window screen and glass top / photo period 6 hours
    fauna: crypts, anubias, marsilea
    bi weekly water change of 15-20%
    once a week ei dose / aquasoil

    20 Gallon High:
    Finnex planted plus w/ 2 pieces of window screen / photo period 6 hours
    fauna: ferns, vals, dwarf sag, crypts, Aponogeton Boivinianus, anubias, tiger lotus
    bi weekly water change of 15-20%
    once a week ei dose / aquasoil

    It seems I have tried everything over the course of several months including: reducing light / photo period, weekly ei dosing, off gasing water for 2 days before water change, cleaning filters, spot dosing excel, and reducing blocking light that enters the room from windows. It seems that the BBA always returns in small amounts.

    My question is are my plants likely too slow growing for bi weekly water changes or is there another cause? The BBA usually targets marsilea, crypt parva, ferns, anubias, and the aponogeton. I assume im at around 15-30 par based on par ratings for the lights. Nitrates stay at around 5-10 after 2 weeks.

    I can add more info in comments so it's not a wall of text.
    #1 mexicatz, Aug 23, 2018
    Last edited: Aug 23, 2018

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