AdAndrews
Marine Enthusiast!
im new to the forum and to tropical fishkeeping.
i have a 260L fluval vicenza tank with
Wow! Talk about throwing yourself in at the deep end!![]()
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It tends to be the most water you have (bigger tank) the more forgiving it will be. I personally think it's not as easy as a "standard" percentage of water to change. I'd go with a bit of trial and error, if the 40% wasn't enough to get it as low as you wanted it next time do a bit more. That is a lot of water to change, even at 40%. Do test your water daily? I found that I haven't needed to do more than one water change a day with my fish-in cycle. I did have less fish than you, but I also have about 150L less water too.
What are your current water states?
having a bigger tank at the start makes more sence, its easier to have larger volumes of water so you can create a stable enviroment for the fish- it will be no harder keeping a 260ltr than a 60... wont have to do as MANY water chages, but the ones you will do will be 4x the ammount of that in a 60
