100% Weekly Vs 50% Twice Weekly Options

[dragonhart]

hi,

is 50% twice weekly Equivalent to 100% weekly? what are the pros and cons? thanks,
jason.

[CP]

d_golem's theory is right.Its all about nitrates management.Throughlly understand this link and you will get a clearer picture:
http://www.goldfishconnection.com/articles...d=67&parentId=8


In short,100% weekly is better than 50% twice a week.
And,50% twice a week is better than 20% daily.

To keep nitrates in check without growing linearly without limits, the minimum water change required, irrespective of the time frame, is 50%.That is to say that whether you change weekly,monthly or even yearly so long as your water changes are 50% or more, there is a maximum limit to the amount of nitrates that can be built up.

But,if you change 20% daily,the nitrate levels are going to build up continuosly without a maximum limit and that is bad.

Hard to believe?Pluck in some figures based on the link provided and you will get what I mean.