For me large water changes as often as possible have shown the best results. With dosing diy two part this seems to be necessary. For me it just makes reefkeeping easier. I dont care to have the biggest badest skimmer or the newest neatest water treatment toys. Sure takes alot of the headach out of the hobby.Maybe there should be a discussion on why large frequent water changes are needed.
Like what is the main reason ? Goal ?
That should be pretty obvious When you add additives, such as Calcium or Magnesium Chloride/ Sulfates or baking soda, those unused ion i.e, Na+ , Cl- and SO4 accumulate in the water column. This also causes a disproportion of ions and creates an ionic imbalance which can off set reactions. This can lead at times to make it more difficult to maintain various levels, like Ca++, Mg ++ or Alk, which has been the case many times.
As far as if they should be large or small is more of a personnel choice, which may have merit in some tanks for being large. A ~ 35 % WC / month brings back and keeps ions at more or less their normal concentration. Others my choose 5 gal or 10 gal / week etc.. which is fine .
i have a 10gl nano and i do a 20% "2gl" WC every week and every thing seems to do great for me. i also have a DIY fuge on it to. what are your perams? phose,nitrate exc.?I'm new, so I do have a few questions. I have done large and small wc, however, with the larger changes I tend to get a bloom algae everywhere, and when I do a small change, it doesn't seem to be enough. I am using distilled water to mix with my salt. My tank is a 10 gal, so maybe this is the issue? I know that smaller tanks are less forgiving... My small changes have been 10%, and my large changes have been 30%. Maybe I have too much phosphate?