by Saltwater Smarts | Feb 18, 2017 | Opinion, Tanks E. ancora and close relatives can reach massive proportions in home aquaria Question Hi guys! My husband and I really enjoy your site and the commonsense advice you always give. My question for you is about the feasibility of adding an LPS coral to an established 60-gallon soft-coral tank. We’ve been keeping soft corals successfully for a long time, and now we’d like to give stony corals a try. We’re leaning toward an anchor coral because a friend of ours (who’s moving out of town and has to break down his tank) has a really nice specimen that he’s willing to give us. Most of the space in the tank is taken up by established colonies, but there is still one rock ledge available that we think should offer adequate room and good conditions for the new coral. The light (T5s) and current should be good in this location, and we’re pretty conscientious about water quality, always keeping nitrates very low
by Saltwater Smarts | Jul 31, 2016 | Corals, Fish, Invertebrates, Reef, ScienceIn general, acros are less tolerant of fluctuations in water parameters than other coralsQuestionI just introduced an Acropora to my 65-gallon reef tank, and it’s already starting to bleach on me. I’d say about one-quarter to one-third of the colony has already bleached, and it’s been in the tank less than a week. This is my first acro. Apart from it, I have several different varieties of soft corals and zoa colonies. The fish include 6 blue-green chromis, 1 royal gramma, 3 polka-dot cardinalfish, and 1 lawnmower blenny. All my water parameters are fine, and my lighting (high-output T5s) and water movement are both good. I placed the Acropora high in the tank close to the lights, so I know insufficient light isn’t the problem.
by Saltwater Smarts | Oct 19, 2015 | Corals, Invertebrates, ScienceSome soft coral species, such as Sinularia, are well-known for their chemical warfare tendenciesSince corals and other sessile invertebrates are more or less stuck in place and can’t chase away competitors or run from predators, many of them—particularly among the soft corals—have evolved the tactic of exuding toxins into the water to prevent other inverts from encroaching and to discourage predation. As you can imagine, this “chemical warfare,” known as allelopathy, can become problematic in closed aquaria because even the largest tank can’t remotely approximate the ocean’s capacity to dilute these noxious chemicals. Some inverts subjected to these toxins in an aquarium may be unaffected, others may remain in a contracted state, while still others may become stunted, suffer tissue necrosis, or even die as a result of the exposure.Of course, there’s no practical way to test for these toxins and all sorts of environmental issues can cause similar problems in corals, so the challenge from the hobbyist’s standpoint is determining when issues with invertebrate livestock might be attributable to allelopathy versus water quality or some other environmental problem (e.g. inappropriate lighting or current). Here are some signs that might indicate allelopathy is to blame: Your tank contains a lively mix of soft and stony corals In the typical “coral garden” tank stuffed with all different kinds of soft and stony corals, it’s not so much a question of whether allelopathy is going on but to what degree it’s going on. In this setting and assuming water parameters and other environmental factors check out okay, “chemical warfare” is often the best explanation for the odd coral refusing to open up for prolonged periods or the occasional inexplicable death or necrosis of specimens. Your tank contains species known to be toxic Some corals are just notorious for creating allelopathy issues. For instance, among the soft corals, various Sarcophyton, Lobophytum, Sinularia, and Lemnalia species are well known for their toxic tendencies
by NightStar | Mar 10, 2015 | Corals, ScienceWe’ve all seen the tanks, they’re usually featured on a big forums or Facebook. The reefs that make you drool, that keep you inspired when your tank isn’t doing so hot. These tanks are gorgeous, immaculate, and obviously cared for by a master...