Reefer_Madness October 2, 2015 Share October 2, 2015 Just curious about this one. The suggested range is between 7-11 dKH or 125-200 ppm. That's a pretty big range and I'm curious what everyone's personal goal is. Mine is 170 ppm or 9.5 dKH. Link to comment Share on other sites More sharing options...
tpallas October 2, 2015 Share October 2, 2015 Stable Link to comment Share on other sites More sharing options...
AlanM October 2, 2015 Share October 2, 2015 150ppm is where I run my pumps towards. 3.0meq/l Link to comment Share on other sites More sharing options...
Marc Weaver October 2, 2015 Share October 2, 2015 8-8.5dKH. Anything 9 or over and I get burnt tips. Link to comment Share on other sites More sharing options...
Reefer_Madness October 4, 2015 Author Share October 4, 2015 Need more data. Bump Link to comment Share on other sites More sharing options...
zygote2k October 4, 2015 Share October 4, 2015 stable- numerical value irrelevant Link to comment Share on other sites More sharing options...
gmerek2 October 5, 2015 Share October 5, 2015 I keep a stable 9-9.5. That way if my doser clogs, fails or whatever I have time to catch it before it gets below 7. And also time to catch it raising before it gets dosed up too high also. Link to comment Share on other sites More sharing options...
pizzaguy October 5, 2015 Share October 5, 2015 7 Link to comment Share on other sites More sharing options...
sethsolomon October 5, 2015 Share October 5, 2015 if my phosphates are over .2 and nitrates over 10ppm I like to shoot for an alk of 10 dkh and if my nitrates and phosphates are near 0 then I shoot for about 7.5-8 dkh Link to comment Share on other sites More sharing options...
Sharkey18 October 5, 2015 Share October 5, 2015 8 to 8.5 Link to comment Share on other sites More sharing options...
s2nhle October 5, 2015 Share October 5, 2015 8-8.5 Link to comment Share on other sites More sharing options...
JeffG93 October 7, 2015 Share October 7, 2015 +1 for stable. Link to comment Share on other sites More sharing options...
matt October 8, 2015 Share October 8, 2015 if my phosphates are over .2 and nitrates over 10ppm I like to shoot for an alk of 10 dkh and if my nitrates and phosphates are near 0 then I shoot for about 7.5-8 dkh Can you elaborate on the rationale? Curious, hoping to learn something new Link to comment Share on other sites More sharing options...
matt October 8, 2015 Share October 8, 2015 7-8, stable is the real priority and I shoot to be where my salt mix gets me rather than adding additional alk during water changes Link to comment Share on other sites More sharing options...
AlanM October 8, 2015 Share October 8, 2015 Rich Ross had an interesting experiment he did with different Alk levels and found that his tank did well up really high or low, but not so great in the middle. He showed the data in his talk to us around a year ago. Lots of folks say that they get "burnt tips" if they are running high Alk on a truly ultra low nutrient system. I have never been clear what burnt tips means, but I think it is new growth with no color or xoos. Link to comment Share on other sites More sharing options...
ridetheducati October 8, 2015 Share October 8, 2015 I have never been clear what burnt tips means, but I think it is new growth with no color or xoos. Under normal conditions, Acropora axial corallite is shaped like an eraser on the end of a pencil, relatively square. Some hobbyist experience burnt tips or deformed axial corallites when alk is high in relation to nutrient levels. The deformed corallite may look like it collapsed on itself or become round instead of the square eraser shape. The rounding effect is due to tank water flow. I believe the coral builds its skeleton at a pace that the symbiotic algae can not keep up, preventing the tip from strengthening. Low nutrients and high Alk = building bricks without straw Link to comment Share on other sites More sharing options...
sethsolomon October 8, 2015 Share October 8, 2015 Ride and Alan are right. so basically you have to keep your ratios in order to keep consistent growth. Too much of one thing can harm the corals. Link to comment Share on other sites More sharing options...
Reefer_Madness October 11, 2015 Author Share October 11, 2015 Under normal conditions, Acropora axial corallite is shaped like an eraser on the end of a pencil, relatively square. Some hobbyist experience burnt tips or deformed axial corallites when alk is high in relation to nutrient levels. The deformed corallite may look like it collapsed on itself or become round instead of the square eraser shape. The rounding effect is due to tank water flow. I believe the coral builds its skeleton at a pace that the symbiotic algae can not keep up, preventing the tip from strengthening. Low nutrients and high Alk = building bricks without straw That is basically the analogy I used as well. Just a theory, but sure seems to be spot on. Link to comment Share on other sites More sharing options...
Reefer_Madness October 11, 2015 Author Share October 11, 2015 Rich Ross had an interesting experiment he did with different Alk levels and found that his tank did well up really high or low, but not so great in the middle. He showed the data in his talk to us around a year ago. Lots of folks say that they get "burnt tips" if they are running high Alk on a truly ultra low nutrient system. I have never been clear what burnt tips means, but I think it is new growth with no color or xoos. That's super interesting about the high/low experiment. I haven't seen the results, but I wonder if it was high and low but balanced. Link to comment Share on other sites More sharing options...
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