Good advice. Phosphates must be coming from somewhere.. Try to find the source.Honestly, find the source of the phosphates.
yogoshio: I completely missed your comment. So normally my Alk is around 8-10 dKH. I do not supplement since a have a hand full of corals and have been doing weekly water changes using Red Sea salt. But I just tested it and its really low now! I did a 25% water change a few days ago and added the GFO sock to my skimmer. New params are at:How high do you run your alk? I have read some weird science about how alk will grab onto phosphates and help reduce them in certain concentrations. Mines at 11.... I dunno, just trying to help...
infinite abyss: Ive been having my LFS test my phosphates weekly with their Red Sea kit. I do not think I am overfeeding. Although I was using a coral food once a week which might be the culprit. I only have a hand full or coral, so Im thinking that might be the problem. I didnt even think about the sand. I do thoroughly siphon my sand bed when I clean the tank. Not down to the bottom, but my bed is about 2" deep, and at most I get down .5".Good advice. Phosphates must be coming from somewhere.. Try to find the source.
I would 1) Get it check with legit test kit. I test my out with api but maybe check with a fish store like beyond the reef(they use red sea i think).
2) Find source.
3) Have you been feeding a lot? I think phosphates rise dramatically when you overfeed or from uneaten food particles on sand bed.
4) Come in contact with sand a lot? Just moving the sand around can cause big rise in phosphates. Combine that with uneaten food and overfeeding + sand movement(could release high amounts of phosphates at once through the source of your sand bed).
Good thinking, to test water from local fish store...i plan to get my own rodi also, hope to test the lfs water in the meantimeIMO Buy the mixed SW or RODI water from your LFS and pay to have them tested. If results aren't good, request a refund
I did this with a LFS by my house using a TDS handheld tester to test the RO/DI water.. Lets just say algae free now and have my own unit to make water Also I save on gas... LOL!!
Well right now I am running about 2 tablespoons (29 gal tank) of GFO media in a sock. Its placed in the return skimmer chamber so Im not sure about the tumbling.How much GFO is being used and is the tumble low or fast?
Every time I do a water change, I clean the acrylic, use a baster to blow off detritus from rock work, start by siphoning the sand bed, then move to water column to suck out suspended detritus. (In that order)just out of curiosity, how do you go about doing water changes?
do you use pump and suction out water from the bottom & between the rocks?
....keep us updated...i'd like to know if its the gfo or something else.