Native marine aquaria are pretty scarce. Little information exists on how to be successful in maintaining healthy coldwater marine systems in domestic aquaria.

Hopefully this record of my failures, triumphs and ideas will assist others interested in keeping some of our fascinating, beautiful and often little known sea denizens in aquariums.

Sunday, 29 August 2010


Desirable algae - as opposed to unwanted and horrible hair and slime algae is very difficult to keep. To date I've not been able to get it right although I hope I've satisfied the criteria required with my latest efforts.

Previously whenever I've had a great rock with a nice clump of wrack, after a few days its started to fray and darken. Within 10 days its gone and the skimmer has been working overtime. Initially I thought this was a lighting issue so boosted the lights as much as possible. Then I thought it was a temperature issue so brought a chiller. Then I thought it was a salinity issue (see seperate post on salinity). I believe that now I've got all the paremeters right and yesterday added a small amount of horn wrack. Hopefully I've finally cracked it!

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