Oursaunougat 240L tank (from 1 year old to future)

Oursaunougat

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and the end of the day reactor seem working , little sound of water flowing but nothing bad.

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Oursaunougat

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Today clearing filter and big work on get out all vallisneria , then replant all stauro, then replace red plantes and the anubia also, then ... Cloudy Time , so i wait

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Oursaunougat

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I have got a ph meter pen as suggested, and a bubble counter, and a tds meter (conductive)
Now i will do accurate setup.
For now with CO2 on i am on 5,7 ph
I will see tomorrow morning how i am without CO2

Us/m = 340
 
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Oursaunougat

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On the morning just before CO2 starting ph= 6,7 (kh = 2)
The new goal is ph drop to 5,2 for try to be sure the CO2 will not be the limit
If you think that is too much , tell me
 

Greggz

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On the morning just before CO2 starting ph= 6,7 (kh = 2)
The new goal is ph drop to 5,2 for try to be sure the CO2 will not be the limit
If you think that is too much , tell me
Your reading in the morning before CO2 comes on is not the same as your degassed reading. And the 6.7 reading for KH of 2 doesn't make sense for degassed water. Should be closer to 7.1 or 7.2 or so.

For instance, right now my morning reading is 6.85, but my fully degassed reading is 7.28. A tank does not fully degas over night. To check my reading, I let a glass of water sit out for three days.

I only mention it as if you are going to drop the reading to 5.2, you better be keeping an eye on the fish. You may be dropping it far more than you think.
 

Oursaunougat

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You are right i think totally degassed is as you said about 7.1
I can test It also by shaking a closed cup of water

But the real question is how many does the drop must be to have the security of non limited CO2 system ?

With about 20000 lumens on top of water for a 1.2 meter by 0.45 surface
 

Oursaunougat

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mid week, i try to dose only trace and K cause i think fish load are enough for no3 et po4 (maybe not enogh just for po4 but i wait and see)
drop cheker always yellow on mid day end day for co2
i am looking some changes , the back of tank seem clean by itself of bba spot.
Photo periode is always same time but the higher light come on on mid day only for 5 hours,

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Oursaunougat

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i have added a 1900 l/h cannister filter and a spraybar with wider holes
i hope more filter flow will help with organic dead pieces.
the flow is ok and with a trim of some plants, it look like that
 

Oursaunougat

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I am building a furniture to hide the big bottle of 10 kg CO2 and the two canister filters (i do not have the tank on a specific furtinure for It, so i need to adapt)

I try this part of furniture since yesterday and in the same Time the 10 kg bottle is now runing

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