They do that when they have no food to eat. only thing they can do if they are to survive.
I have the same problem, but just leave it as they stop and the acro grows back
aprx pricing which i have seen on the net.
nano stream 6025 2500l/h $120
nano stream 6045 4500l/h $160
controllable 6055 5500l/h $320
I really doubt pricing will drop as people will always be prepared to pay for quality. The vortech will be even more expensive than a stream 6100.
Not designed to disperse water like the current streams as these are nano for smaller tanks and tight spots.
Corals have to be feed!
Even if it is an often overlooked fact with respect to plankton filter feeders that are often fastened to the substrate: all animals depend on ingesting the energy for motion and metabolic processes from the food they eat. The spectrum of marine invertebrates that cover a part or their entire nutritional needs from zooplankton or phytoplankton ranges from sponges to soft and leather corals all the way up to whales. Reef-building stony corals also belong to the family of plankton filter feeders, even though another source of nutrients is available to them because of their symbiotic relationship with zooxanthellae.
Corals have to be feed!
Even if it is an often overlooked fact with respect to plankton filter feeders that are often fastened to the substrate: all animals depend on ingesting the energy for motion and metabolic processes from the food they eat. The spectrum of marine invertebrates that cover a part or their entire nutritional needs from zooplankton or phytoplankton ranges from sponges to soft and leather corals all the way up to whales. Reef-building stony corals also belong to the family of plankton filter feeders, even though another source of nutrients is available to them because of their symbiotic relationship with zooxanthellae.
Plankton ingestion methods
The branched tentacles of the small-polyped stony corals and horn corals are perfectly designed to filter and ingest each and every nutritious particle from the water sweeping over them.
With their sensory cells corals discern the chemical traces prey leave behind in the water and then the corals will extend their tentacles to capture the prey. Cnidoblasts – they are the most highly advanced cells in the animal kingdom – shoot out microscopically small harpoons and turn every little plankton crustacean within the reach of their tentacles into sure prey. Some corals secret films or use strands of mucus to capture bacteria or fine organic particles from their environment.
Leather corals and soft corals have finely feathered tentacles with which they filter plankton out of the water; special digestive enzymes can even break down the complex carbohydrates of marine algae. Plankton captured in this way not only significantly contributes to the energy supply and the growth rate of corals but also delivers all the main and trace nutrients in a concentrated form that are vital for the properly working symbiotic relationship with zooxanthellae. Scientific tests have verified the growth promoting effect of a plankton diet in reef-building, small-polyped stony corals (Houlbrèque et al. 2003 and 2004).
Star fire is weaker than clear float glass and it scratches easy. I have never heard of scratch resistant glass.
I have 12mm star fire glass on my tank on the front and sides. Also have starfire bracing.
Too be honest it is not worth the extra cost. my next tank will be normal glass.
true tm it is weaker and does scratch far easier. you do need to use the same glass for the sides as it reflects to the front glass so the green colour will darken the front panel.
They are so bright that they made my acros look white. even with 4 blue t5 floros i could not get a blue looking tank. maybe your ballast are not right for the bulb.
Some people like them for blue/yellow acros but not my cup of tea