View Full Version : Params out of control...please help

01/12/2007, 11:59 AM
OK so all of the sudden my params have gone mad…MAD I TELL YOU!

My sg is 1.030 and my calcium levels are 660!!!

I’m guessing I can solve both these problems with some RO freshwater…right?

If so how much and how quickly can I add THAT much freshwater? (20g tall…see sig)

I'm guessing that something went wrong with my top-offs but I really don't know how

01/12/2007, 12:02 PM
You weren't topping off with saltwater were you?

01/12/2007, 12:04 PM

01/12/2007, 01:43 PM
I'd take out enough salt water and replace with fresh water for the sg to go down to 1.028 today. Then do the same tomorrow until the sg goes down to 1.026. Don't worry about the calcium but check your alkalinity and make sure it hasn't dropped too much

01/12/2007, 02:00 PM
THANKS for the help!

I really appreciate it

01/12/2007, 03:13 PM
AFAIK, general consensus that you can safely change SG by 0.001 a day without any ill effects. Going faster might irritate some of your critters, especially sea stars.

01/12/2007, 03:49 PM
so how do i figure out how much fresh water would change the sg by .001???

01/12/2007, 03:58 PM
I have no idea :D .... what I've done, I've been removing a cup of SW and replacing it with FW a couple of times a day, while monitoring salinity.

01/12/2007, 04:01 PM
I've topped off a tank sitting that high and dropped down to 1.026 in a single topping without too much stress witnessed, but definatly do it slower if possible. As for the calcium, if this tank is fairly newly setup, expect fluctuations in calcium, alk, ph, and a few others for awhile. My CA stayed in the 600's for about 2-3 months before it normalized, now it stays about 420ppm consitantly.

01/12/2007, 04:06 PM
I've lowered my by 0.001 overnight by using a drip hose with no advers reactions, the same hose I use to aclimate new fish or corals. An airline with a valve in it set to about 2 drips/second. Takes about 3/4 gal to lower my 50 gal tank by that much.


01/12/2007, 04:20 PM
I agree with Alaska Phil, it takes about the same to lower my 55 that much as well.

01/12/2007, 05:07 PM
right on

thanks for the suggestions...i think i'm going to set up some type of drip hose.......maybe a slow one to do top off too

for a second i thought i wouldn't have a fish tank project for this weekend....riiiiiight