Hi all,
Need some help, please see info below:
I have a circa. 300litre aquarium (120cm x 60cm), its been established for many years but in the last few months every week I have encountered a lot of brown algae/mulm on the glass but mainly on the plant leaves.
INFO:
Lights on: 40w at 2pm until 10pm 42inch plant growth tube. 2 more lights at 4 - 9pm 54W one Juwel high lite - cool white and the other Iquatics Tropical.
The water readings are good in terms of nitrate, nitrite etc. e.g. 0. Nitrate is controlled by Interpet Nitrasafe rechargeable bag.
Filters - Ehiem Wet Dry filter 2227, Eheim box filter internal, small Eheim 45 pick up and a Hydro Koralia 1600 for circulation
Co2 is pumped 1-2 bubbles a second from 1pm until 8pm.
Fish - about 20-25, small mainly tetra, rasbora, catfish. Fed only once a day and sparingly.
Water changes - about 10% per week, box filter sponge cleaned in old water and some wool added to collect extra mulm in the aquarium is rinsed out, the main Eheim 2227 media is cleaned every 2-4 months, mainly rings and some wool (again rinsed in old water to keep bacteria).
Plant food - Profita and Seachem flourish added weekly.
Please see the photos. a bit deceptive as this is just after a weekly clean, see the moss balls and mulm already on the sand, the plants collect large amounts of debris when gently shaken. As you can see green algae on the Anubia as well and red algae spots on the glass (more before the clean removed some today). I've read about Diatoms causing the brown algae but can't estbalish the source or get rid of it!?
I've never had this problem in many years of keeping an aqaurium (this one has been running for 8 years and the issue only came about in the last few months) The same filter and set up as before. I've tried Seachem Denitrate, Rowaphos and various bacteria mulm digesters - Interpet etc. ( I know thats not getting to the root but they haven't worked).
Any tips greatly appreciated!
Rgds
Smithie
Need some help, please see info below:
I have a circa. 300litre aquarium (120cm x 60cm), its been established for many years but in the last few months every week I have encountered a lot of brown algae/mulm on the glass but mainly on the plant leaves.
INFO:
Lights on: 40w at 2pm until 10pm 42inch plant growth tube. 2 more lights at 4 - 9pm 54W one Juwel high lite - cool white and the other Iquatics Tropical.
The water readings are good in terms of nitrate, nitrite etc. e.g. 0. Nitrate is controlled by Interpet Nitrasafe rechargeable bag.
Filters - Ehiem Wet Dry filter 2227, Eheim box filter internal, small Eheim 45 pick up and a Hydro Koralia 1600 for circulation
Co2 is pumped 1-2 bubbles a second from 1pm until 8pm.
Fish - about 20-25, small mainly tetra, rasbora, catfish. Fed only once a day and sparingly.
Water changes - about 10% per week, box filter sponge cleaned in old water and some wool added to collect extra mulm in the aquarium is rinsed out, the main Eheim 2227 media is cleaned every 2-4 months, mainly rings and some wool (again rinsed in old water to keep bacteria).
Plant food - Profita and Seachem flourish added weekly.
Please see the photos. a bit deceptive as this is just after a weekly clean, see the moss balls and mulm already on the sand, the plants collect large amounts of debris when gently shaken. As you can see green algae on the Anubia as well and red algae spots on the glass (more before the clean removed some today). I've read about Diatoms causing the brown algae but can't estbalish the source or get rid of it!?
I've never had this problem in many years of keeping an aqaurium (this one has been running for 8 years and the issue only came about in the last few months) The same filter and set up as before. I've tried Seachem Denitrate, Rowaphos and various bacteria mulm digesters - Interpet etc. ( I know thats not getting to the root but they haven't worked).
Any tips greatly appreciated!
Rgds
Smithie
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