Posted: Thu May 10, 2018 4:44 pm Post subject: Need help with my 50 gallon 3 footer
I need your help with my low tech tank which was thriving 3 months before but now is dying.
Tank specs: 36in(L) x 18in(B) x 18in(H)
Lights : 2x36W PLL + 1x24W T5HO
Dosage per week: KNO3 - 1.5 teaspoon x 2 + KH2PO4 - 1 teaspoon x 2 + Seachem Flourish - 5 ml x 2 + Flourish Iron - 5 ml x 1 + Flourish excel - 2x recommended dose daily
Tanks was started using pre-used ADA Amazonia Soil topped with new 9L ADA Amazonia. Plants almost exploded and everything was going well.
But last month the tank was infected by BGA, newly added fish started dying and the water turned brownish yellow. I did 70% water change and added another filter to improve flow. BGA started receding but plant growth is severely affected.
At about the same time when the tank got infected, I replaced the hood with a reflector hood. I don't whether that has caused the issue or my lights which was almost a year old. I am also guessing on nutrient deficiency.( Possibly Mg since I am not dosing it separately.
Posted: Sat May 12, 2018 12:16 pm Post subject: Re: Need help with my 50 gallon 3 footer
Since you have not mentioned anything about co2 injection, can it be assumed that you do not have it currently? If thats the case then you have guessed correctly that its a nutrient deficiency (of CO2)...
Amazonia is literally an ammonia bomb during the initial period. You have to use it to your advantage by planting densely / high levels of CO2 / and frequent water changes. I'm not sure if you have sticked to that routine.
Part of the mess could also be because of summer heat. IME plants may not do well at tank temperature above 32 deg. Cool it down with some DC fans.
Now things that might help in recovering;
0) If No CO2 injection, then get one ASAP if you want to continue with high lights and amazonia
1) Reduce the lights - Keep photoperiod for not more than 7-8 hours
2) Trim and get rid off dying leaves / plants
3) Filter maintenance every 2-3 weeks since there'll be lot of organic matter from dying leaves / plants
4) DONT overdose excel. It may or may not kill algae but it has the potential to kill plants.
5) Be patient. Things will become more stable once amazonia has leeched out most of the ammonia
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