Water Changes

MerlinT

MerlinT

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Hi Guys
I have a 165Lt tank minus volume of rock ect gives me 150Lt of actual water. I would just like to know the following:

a) Do I do 50Lt water change once a month or
b) Do 25Lt water change twice a month?

My thinking is that with a 50Lt change, after two weeks the whole 50Lt's has started to get dirty whereas
with 25Lt water change twice a week there will at least be 25Lt clean fresh water available.

Is this way of thinking logical or not?

Thanks
M
 
Works out the same....
I would rather do 20l waterchanges every week if your planning on going that route. Prevents sudden changes & gives you about 50% waterchange a month...
 
or 20L every week...
It is just one drum :whistling:
 
Hoping to keep PO4 NO3 down without having to add meds time. I think my neighbour overfed when I was away on holiday so those parameters are a little high.

M
 
Ooh another water change thread!!
This is gonna be interesting:whistling:
 
This is where I miss Mrs "B" most times.
Belinda has all the threads and links in a DB and saves many a retyped post.

But @MerlinT what were the NO3 and PO4 before and after the tank sitter?
If it is a spike you want to contend with then a big WC is appropriate. If it is a long term degradation then small WC are recommended along with remedy of the cause. WC is no fix unless you are on to the 95% fix guy strategy.
 
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But @MerlinT what were the NO3 and PO4 before and after the tank sitter?
If it is a spike you want to contend with then a big WC is appropriate. If it is a long term degradation then small WC are recommended along with remedy of the cause. WC is no fix unless you are on to the 95% fix guy strategy.[/QUOTE]

NO3 was 0.03
PO4 was 0.05ppm

Now
NO3 is .50
PO4 is 5ppm or something like that

M
 
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