View Full Version : Biggest Factor For Good SPS Ployp Extension

01-09-2018, 08:24 PM
What do you think has the most influence on SPS polyp extension?

01-10-2018, 03:12 AM
I would like to know this also.
My coral tank is still fairly new. Maybe 3 months or so, i cycled witb prodibio.
I had full colonies in it just last the 1 month mark, i added a refugium with FIJI mud and ever since then i have polyp extension like nothing ive ever seen before... its blows me away. During the day the sps colonies look like they are trying to feed... then at night with lights off its 10x crazier. The tips on the sps have almosy 1cm long extension with 5 stringers out each polyp. They are extremely happy.

My alk has been somewhat lower since the start around 7.2 give or take. Cal 420 mag 1350 while i was perfecting my dosing system.
Just recently raised alk to 8.2 and hasnt had any change on the coral health / happyness.

I believe it has something to do with the fiji mud.

Mind you i also use prodibio clean every 15 days or so. Which gives a huge boost to benifital bacteria.

My phos has been 0.001 and nitrate 0.1 since the start of the tank. That i am almosy positive is from using the prodibio.

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01-10-2018, 03:15 AM
Forgot to mention ive only done 2 40gallon water changes on this 400 gallon system since the start...

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01-10-2018, 07:55 AM
I would say a established system

01-10-2018, 07:57 AM
Or good hot sauce

01-11-2018, 01:55 AM
Or good hot sauceFranks red hot?

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01-11-2018, 02:20 PM
I would say that provided the basics are being met, flow is the most important, then light. Really, good PE is a culmination of everything.

01-11-2018, 03:58 PM
This is one of those topics that everybody has an opinion on and it will be hard to get an agreement on as there are a lot of variables from the type of coral, to lights, to water clarity, to water flow and everything in between including fish and inverts which can affect coral extension

For me I feel water flow is important in coral extension as well as whether your coral rely on light or feed off what's in the water column

01-29-2018, 04:32 AM
I my experience generalizing sps polyp extension without first considering the species and second the vast variety of each species is just chasing a vague & impossible dream. There are lots of sps species that have very little to no PE in the daylight hours and others that are very hairy all the time.
In my opinion the biggest factor is genetics.
Once you have that part of the equation figured out you can then break it down into what enhances PE on a specific coral but keep in mind what will enhance one species of acropora doesn't always have the same affect on another. Consider Red Planet - AKA A.hyacinthus for example. In my experience it almost always has great PE in most aquarium environments good or bad, while other varieties of A.hyacinthus may not have near as much PE in the same tank. As previously stated genetics is the biggest factor.
Also frags of frags from some corals may do better in later generations after becoming "tank hardened" depending on the depth and environment the mother colony was originally harvested from. There are too many varieties of SPS & variables for each for your question to be answered with any real accuracy and can only be addressed in very basic generalities at best.