Yellow Ball Sponge & Blue Leg Hermit

[Dr. Dendrostein]

You mentioned couple years ago a certain sand that dissolves quicker than argonite.
Did I remember that right or were you mentioning argonite....thx

 

[Subsea]

You mentioned couple years ago a certain sand that dissolves quicker than argonite.
Did I remember that right or were you mentioning argonite....thx

For sandbed substrate I used aragonite special reef grade < 1mm

Some of the calcium reactor media should be more soluble.

Hey Mister,
Show us some pictures!

 

[dennis romano]

I have had this tank since 1979. I think it is dolomite. I bought it used from a shop that was closing.

 

[Dr. Dendrostein]

Dendronephthya umbellulifera sp
One is frag we cut, 4 weeks ago

 

[Subsea]

As an experiment in lighting, increased white to 100% on 300W Mars black box. Let’s see colors closer to 10K on 2/3 of left side of tank.

 

[Subsea]

Starfish cleaning sponge.

 

[Subsea]

What do asterina starfish eat?
[The vast majority are opportunistic scavengers and/or herbivores that eat coralline or other types of algae. It has been estimated that of all the Asterina sp. varieties, only around 5% are coral eating species, which is good news for aquarists since they are so common in our systems.]

I have a problem with ornamental macro algae growth in this tank. The symptons are seen with two differrent red macros: Bortacladia, a deep water species often called Red Grapes and and Gracilaria Parvispora, a light loving species (original Red Ogo from Hawaii. I think asterina eat biofilm on macro surface which allows pathogens to attack the macro algae.

#1
Note white film on red grapes.

#2
Red Ogo in 120G

#3
Red Ogo in 75G

 

[Subsea]

I recently got new macro that looks like a cactus garden.

 

[dennis romano]

Nice. Is that a cerianthus anemone next to them?

 

[Subsea]

Nice. Is that a cerianthus anemone next to them?

Flower Anemone, Green - Epicystis crucifer

Pictured is one many variations of Green Flower Anemone that displays quite a bit of fluorescence under blue lighting. These are found in shallow water, do well in almost any lighting situation and will feed readily upon krill, brine shrimp and flake food. In the wild these colorful...

reeftopia.com

With respect to #3 picture, from substrate going up and left to right: tube anemone, green flower anemone, red flower anemonea and anchored to top of conch shell is Red Ogo, Gracilaria Parvispora.

Note small astrae snails removing dark green mat i between yellow polyps.

 

[Dr. Dendrostein]

Is there yellow macro algae. I don't know if that's what I see in this photo. Photo from internet