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The tips on almost all of my Acros look burnt. Only about 1/8 inch each. No light change in the last year. I think I read somewhere what caused this but can't remember. Anyone have any idea.
Tips of SPS
- Thread starter mike oglesby
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Is it possible its accelerated growth your seeing? Sometimes when my SPS are growing really quickly they have a slight white tint to the tips as the tissue is trying to catch up with the growth. Just a thought
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Thank you for the response. But the tips turn white then brown like algae
That's another good possibility.
too much alk for the nutrients present. up nitrate to 5ppm and have detectable phosphate (.02). - if alk is 11 or less
if that means killing the gfo go with it.
calcium carbonate is building faster than symbiodinium can keep up.
this can also happen with hardcore par too. like 800 par. but more than the tips would be whiteish. you would have pale looking colors. you can up the blue spectrum to clean that up.
i can actually replicate this phenomene in my own tank.
if that means killing the gfo go with it.
calcium carbonate is building faster than symbiodinium can keep up.
this can also happen with hardcore par too. like 800 par. but more than the tips would be whiteish. you would have pale looking colors. you can up the blue spectrum to clean that up.
i can actually replicate this phenomene in my own tank.
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Why are your answers so definite ,
when there so many variables in this hobby ?.... just sounds like someone who was not kept Acropora for a long time?
Help me understand why you think you're so right about everything Russell
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since most acros grow from the upper portions, when phosphate inhibits growth it stops growing and bleaching will usually occur, then algae.
here's a great article about this:
http://reefkeeping.com/issues/2006-09/rhf/index.php">http://reefkeeping.com/issues/2006-09/rhf/index.php</a>
I have personally experienced this numerous times myself and I have photo's, lol.
here's a great article about this:
http://reefkeeping.com/issues/2006-09/rhf/index.php">http://reefkeeping.com/issues/2006-09/rhf/index.php</a>
I have personally experienced this numerous times myself and I have photo's, lol.
So after getting in from work, i found the uptake of no3 and nh4 here...
http://www.int-res.com/articles/meps/68/m068p065.pdf">http://www.int-res.com/articles/meps/68/m068p065.pdf</a>
based on ammonium....
[IMG]http://rd.springer.com/article/10.1007/BF00942117#page-1">http://rd.springer.com/article/10.1007/BF00942117#page-1</a>
I am sorry, but i cannot find that formula I had, so you can just throw out what I said about ammonium easier to photosynthesize than nitrate as I really cant find it. Also it might be a bit presumptuous to even claim this as many corals consume nitrate and ammonium at different levels. I may have confused the equation with efficiency and it has no real-world application in our tanks.
sorry for confusion or retraction as I did not mean to mislead.
http://www.int-res.com/articles/meps/68/m068p065.pdf">http://www.int-res.com/articles/meps/68/m068p065.pdf</a>
based on ammonium....
[IMG]http://rd.springer.com/article/10.1007/BF00942117#page-1">http://rd.springer.com/article/10.1007/BF00942117#page-1</a>
I am sorry, but i cannot find that formula I had, so you can just throw out what I said about ammonium easier to photosynthesize than nitrate as I really cant find it. Also it might be a bit presumptuous to even claim this as many corals consume nitrate and ammonium at different levels. I may have confused the equation with efficiency and it has no real-world application in our tanks.
sorry for confusion or retraction as I did not mean to mislead.
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Ive had that happen a few times before.. and it is nearly always related to alk
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You are basing your misinformation on strictly your "one size fits all theory" which is far from reality.
generally speaking, the higher the phosphates the higher the alk must be, so at say 10-12 dkh, then your growth actually does happen at higher ranges of phates.
what you are spewing is a very narrow point of view, with obvious limited exposure to SPS corals.
Acro's generally grow from the tips, so when phosphates are inhibiting growth, that's where it happens, hence the white tips followed by ALGAE.
In low bio-load sps tanks, then yes, you might need to actually add nutrients as corals do need minute amounts of phates to live. Low bio-load sps tanks are fairly easy...
However, if you have an extremely high bioload tank, then nutrient removal becomes more critical and less room for error as phates and trates can easily creep up without much notice. I feed my tank a minimum of twice a day for 20 minutes per feeding, but usually 3-4 upwards to 12 times a day.
In for my sps to thrive, I do weekly 40% water changes, change 2 cups of HC GFO & Rox 0.8 carbon weekly, 10 ml 100 proof vodkda daily, etc...
I keep my alk between 8-9. If my phates go over approx .08 growth begins to stop, etc. Also, if Alk would climb to ten, I would also get "burnt tips"
Zeovite tanks keep alk at 7.5 to 8 or they have issues.
So there is a correlation between phates and ALK, and also individually eith can make that happen.
generally speaking, the higher the phosphates the higher the alk must be, so at say 10-12 dkh, then your growth actually does happen at higher ranges of phates.
what you are spewing is a very narrow point of view, with obvious limited exposure to SPS corals.
Acro's generally grow from the tips, so when phosphates are inhibiting growth, that's where it happens, hence the white tips followed by ALGAE.
In low bio-load sps tanks, then yes, you might need to actually add nutrients as corals do need minute amounts of phates to live. Low bio-load sps tanks are fairly easy...
However, if you have an extremely high bioload tank, then nutrient removal becomes more critical and less room for error as phates and trates can easily creep up without much notice. I feed my tank a minimum of twice a day for 20 minutes per feeding, but usually 3-4 upwards to 12 times a day.
In for my sps to thrive, I do weekly 40% water changes, change 2 cups of HC GFO & Rox 0.8 carbon weekly, 10 ml 100 proof vodkda daily, etc...
I keep my alk between 8-9. If my phates go over approx .08 growth begins to stop, etc. Also, if Alk would climb to ten, I would also get "burnt tips"
Zeovite tanks keep alk at 7.5 to 8 or they have issues.
So there is a correlation between phates and ALK, and also individually eith can make that happen.
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http://www.reef2reef.com/threads/best-method-for-removing-nitrates-and-phosphates.232228/">http://www.reef2reef.com/threads/best-method-for-removing-nitrates-and-phosphates.232228/</a>
"This inhibition of calcification takes place at concentrations frequently attained in reef aquaria and may begin at levels below those detectable by hobby test kits. For example, one research group found that long-term enrichment of phosphate (0.19 ppm; maintained for three hours per day) on a natural patch reef on the Great Barrier Reef inhibited overall coral calcification by 43%.6 A second team found effects in several Acropora species at similar concentrations." Randy
"This inhibition of calcification takes place at concentrations frequently attained in reef aquaria and may begin at levels below those detectable by hobby test kits. For example, one research group found that long-term enrichment of phosphate (0.19 ppm; maintained for three hours per day) on a natural patch reef on the Great Barrier Reef inhibited overall coral calcification by 43%.6 A second team found effects in several Acropora species at similar concentrations." Randy
