SPS bleaching

[sky007]

My acro and monti started to have signs of bleaching...I have checked the water parameter seems to be ok (NO4=0).

I have 2 X 120w LED just 15 inch above water and 2 X WP 40 blowing at different side. The depth of the tank is 16 inch. Been diligently dosing KH, CA & MG. But can't seems to keep them...

Could it be too much light or current?

Thanks!

[sherman]

Try moving your light further away

[sky007]

Tested the parameter again.

KH 10, PO4=0, NO4=0, CA 350. Didnt test the mg....Is the KH on the hi side and caused SPS to bleach? How to lower it?

Another question: What's the best way to maintain these parameters above?

Thanks!

[brojj]

KH 10 is still ok. If u want to lower KH, water change to bring it down slowly. Most important dun let any parameters swing too much. SPS ( Stablity Promotes Success ). Quote from one reefer in reef central. Best way to maintain is using dosing pumps or if a lot of SPS, Calcium Reactor (CR).

[brojj]

Raise your LEDs by another 5 inch.

[brojj]

And bring up your calcium further & slowly to 420ppm.

[brojj]

Raising your calcium will also lower your KH.

[sky007]

Thanks for advice bro, will do that and monitor before i start again,.

[superbee]

To me the most easiest way to maintain ca & kh is using balance dosing either by CR or Kalk.

[superbee]

I use 3 part dosing to set my start point and the CR to maintain. Once you are able to maintain the kh consumption rate, the ca would most likely good as well

[sky007]

Thanks.. the idea of having an CO 2 tank makes my wife very nervous.. using manual dosing, but no dosing pump

[brojj]

If u re fine with manual dosing daily, then u can continue. But if one day u starts to get 'turn off' by dosing by hands daily, then u can consider dosing pumps. I believe quite a number of reefers here started off dosing by hands too before they switch to dosing pumps.