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About Subsea

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  • Birthday 05/29/1948

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  • Location
    Austin, Tx
  • Interests
    Hunting, fishing and reefing. At present, I have over 7000 gallons in salt water. At the end of Feb, I will have a grand opening for AquacultureRanch. Macro and live rock will be my mainstay.
  1. I never considered fish as appropriate janitors. I start at the bottom of the food chain with micro fana & microflora. When I start a tank, I get uncured diver collected live rock and I cure it in my display tank to get maximum diversity at the microbial level. I restrain myself from adding any fish for 90 days. In this way, my display tank starts out as a display refugium. I maintain mandarins in sumpless skimmerless 55G displays. Even with heavy fish loads in these tanks, my live rock is loaded with large amphipods & small copepods., if I allow tank to mature 90 days without fish predators. I am glad you discontinued carbon dosing which fuels bacteria blooms like Cynobacteria & GHA. Bacteria feeding on protein (food) produce amino acids which grow coral and consume detritus. So food fuels growth. You are starving your system. Even if you don’t want to feed more,then you should dose nitrogen. Without nitrogen fixation bacteria, planet Earth would be a wasteland. Understand this about nutrient management: In the Marine enviroment: Carbon:Nitrogen:Phosphorus combine in the ratio of 560:30:1 for macro algae & coral. Micro algae combines in the ratio of 116:16:1 why strive for zero nitrogen in your system?
  2. Your equipment is top of the line. I use natural systems with minimal equipment. We are on opposite ends of the spectrum on nutrient management. I give the system as much food as it can handle. I put more emphasis on the sand bed janitors that process organic & inorganic nutrients and feed the tank live food with larvae of different sizes. Consider your reef system as The Garden of Eden. Do you starve your showpiece garden? As a Master Gardner, I feed my reef and watch desirables grow. When undesirables grow, I get appropriate janitors or I weed them out before they take hold.
  3. Algae reactors, algae refugiums and ATS all work. I have used them all for more than 40 years. understand this about nutrient management: in the Marine enviroment the big three nutrients are nitrogen/phosphate/potassium. Everything that grows requires nitrogen & phosphate. As a general rule, the ratio of nitrogen to phosphate is 30:1. Also as a general rule, low nitrogen favors nuisance algae. i run high nutrient systems and I feed heavy. Pardon the glass needing cleaning. It’s been a busy Spring here in Austin.
  4. @blasterman What is “bottom layer” bacteria? While counter intuitive to me, I have been told that denitrification bacteria multiply quickly compared to nitrification bacteria.
  5. Seed sump with copepods. Let pods live in detritus.
  6. Eric, I thought pods were supposed to get sucked into display tank. The logic that macro refugiums require high flow is incorrect.
  7. For your needs, CPR is the way to go. I recently put one on my 120G. I have many HOB filter gutted to be high energy/high flow refugium. Pods do not require low flow. They multiply just fine in a high energy environment. I use AquaClear 70 & 110 and get a good light source. Also, I suggest small rock rubble on bottom to provide a matrix for bio films to cover.
  8. Personally, I would use a 10% solutuion off hydrogen peroxide at 3.5% concentrate. To clean coral frags & live rock, I soak for 10 minutes. Soak for 2 days, it will bleach rock white like beach. Bleach leaves toxins on surfaces and in the interior pores of rock. I might bleach a glass container, but I would never use anything with interior porosity that had seen bleach. Pest are not your only problem with used rock. Calcium phosphate is a normal salt deposit in a heavily dosed reef tank with limewater for alkalinity management required by SPS.
  9. You should harvest Red Grapes for nutrient export and sell ornamental macros for doughnuts..
  10. Low nutrients favor undesirable algae Wnar you described was Old Tank syndrome and seahorses were your apex predator.
  11. Dawn, As always, your tanks & photography are stellar. Kudos to you. I would like to expound on the concept of “old tank syndrome”. In forestry, the analogy of “old tank syndrome” is Climax Forest. @mwhitelock Your comment was incitful and shows an understanding of succesion of different levels of occupancy. In forestry, that would be grasses to savanna to forest to climax forest. In our marine enviroment, switch terms to trophic levels. https://en.m.wikipedia.org/wiki/Trophic_level The trophic level of an organism is the position it occupies in a food chain. A food chain is a succession of organisms that eat other organisms and may, in turn, be eaten themselves. The trophic level of an organism is the number of steps it is from the start of the chain. A food chain starts at trophic level 1 with primary producerssuch as plants, can move to herbivores at level 2, carnivores at level 3 or higher, and typically finish with apex predators at level 4 or 5. The path along the chain can form either a one-way flow or a food "web". Ecological communities with higher biodiversity form more complex trophic paths. The word trophic derives from the Greek τροφή (trophē) referring to food or nourishment.[1] https://northernwoodlands.org/articles/article/what_is_a_climax_forest The best way to grasp the idea of the climax forest – and why some don’t like the term – is to first understand that the concept is itself just one component of an even larger ecological view of how forests develop and change over long periods of time. This larger concept, known as forest succession, explains how even when people leave them alone, forests change. Trees and other plants grow, mature, reproduce, age, and die. Soils build and erode. Weather changes daily, and climate varies over long periods. Animal populations come and go. With time, these sorts of changes bring still other changes that go beyond the sizes of the trees to involve shifts in the kinds (species) and mixes of trees growing in the forest.
  12. Dose nothing. Either feed more or reduce Photosynthesis intensity or duration
  13. Nothing has changed in 50 yrs with respect to phytoplankton culture. These guys wrote the book. http://floridaaquafarms.com/
  14. Lights on 10 hours. Just stirred up a sandstorm in substrate as normal daily maintenance to feed filter feeders biodiversity of larvae fron sandbed detrivores. The reason this tank is in flux is because of major changes in biofiltration in the last 30 days.
  15. @Moolelo Thank you for that question. I know so much more now than then about biofiltration and sustainable reef keeping methods. Yes to micro fauna and fana. I spent 6 months developing the substrate micro inhabitants before adding the first carnivore fish. Include plankton & bio-plankton in with food webs. Bacteria are the microbial overlords in our ecosystem we call a reef tank. On the natural reef, the reason inorganic nutrients read scarce in bulk water is because bacteria consume it, then move it up the food chain as a sustainable food source. I have been skimmerless for 35 years, because I choose to allow the coral holobiont to “conduct the orchestra”. Patrick As I reviewed history of this tank, I realized this tank is 1/4 century old. Longer than the time span between World War 1 & World War 2 I guess that makes me an “old dude”. For me, the beauty of the reef is an expression of Creation. Each of us, is a master sculpture. I choose the route of “Master Gardener”. Nuisance weeds and good weeds (veggies & fruits) all need the same thing: food & space. For food, some need light and some need flow to bring food to it. The uglies have had numerous billions of years to develope strategies to survive. Let’s do a case study on Cynobacteria. I just did a 20G lagoon tank breakdown on a newly set up tank at a church multi use facility. Because of other time demands, the tank floundered two months after set up. Cynobacteria covered tissue of green sinularia and green star polyps and literally dissolved organic biomass. Because tank was 20 miles away, I did not see the issue until too late. Visitors at morning Bible Study were admiring the dark red mat contrasting the vivid green of the sinularia. After everyone was gone, I pulled out tooth brush to do “damage control”. When I brushed off the burgundy slime, I saw craters missing inside main stem of this leather coral. The stench was smelled by a friend from 20’ away. Some years ago, Randy Holmes Farley article on survival techniques of Cynobacteria with respect to phosphate scavenging of inorganic phosphate that was deposited as calcium phosphate, caught my attention. This calcium phosphate is normally associated with limewater addition used in reefkeeping “alkalinity management”. In geologic time of early earth history, athmosphere was a combination of methane & sulfur gases. Cynobacteria used survival techniques to adapt to changing environments and converted those hostile environments to oxygen rich. Because my groundwater comes in at 950 TDS, all of the evaporation makeup is limewater from 1000’ down in a subterranean basin called the Edwards Aquafuer. Well is in a fault zone between both Edwards & Trinity Aquifier which covers 2/3 of ”Texas Hill Country”. Because Texas was a shallow marine sea, silicates are a part of my water input to all of thousands of gallons I maintain. Fourteen months ago, I incorporated sponge filtration as the third leg of biofiltration in my nutrient management methods: bacteria, algae and sponges. I replaced macro with cryptic sponge. Because sponges consume DOC and produce DIC & Marine Snow, both of which are food for coral. It’s a nutrient food web, that feeds itself. I have not used granulated active carbon in 16 months on this 100G system. Food webs are a complex soup. I have read a 6 Part series on Advanced Aquaria by Dana Riddle on “Coral Nutrion”. My favorite sentence in the series is “Photosynthesis is the connection between the inorganic and organic world”. BRS TV Video release on Friday two weeks ago was on “coral nutrition”. Serious inquires only. This stuff is complicated and for me, reinforces natural biofiltration in my Laissez Faire reef keeping.
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