No more company time now! Buckle up we are going for a long ride.
I started off my tank with a not so DSB & discovered over time that it was a magnet for detritus. I used the aragalive fiji pink sand & it helped with the cycle a great deal, but not with the crap buildup over time. The only time I was able to see this was when I stirred the sand & it became clear that things were getting trapped, as opposed to recycling. I did my 5g weekly water changes religiously & all was well for the most part. There were mini algae blooms, first the brown, then the green, then some cyano...etc. Overall nothing major though, since most were patches & did not overtake the entire tank.
Next, as with many stories here, I felt that the small tank had gotten too small & off I went for a 55g. I used the same exact sand from the smaller tank & spread it into my new tank, thinking a shallow sand bed would be the trick. Boy was I wrong! Nightmare from hell!!!!! Now the sand was not deep enough to cover all the unwanteds in there & still present which impeded any siphoning. I saw constant detritus in the sand & it was more of a detritus tank, rather than a reef tank. I could have won TOTM for this I tell you! Levels were off & I had some major cyano problems, along with algae.
I quickly realized this was the wrong route & within 4-5 months or so went for another upgrade, but this time was excited about the BB phenomena. I did my HW & made sure I had enough flow in the tank before it even started & even upgraded my skimmer:
-Tunze 6060 (1600GPH)
-Eheim 1262 retirm (650GPH after 4' height into consideration)
-Seio 820GPH
This is some 28x turnover for me & in a mostly softy/LPS tank with some SPS. I had planned to get another Tunze6060 in the future, but found that just one really trashed the water too violently. It was not until some time that the tunze settled in that it provided more steady & even flow (flow slowed down after time). After only 3-4 weeks of this water really mixing in my tank I found spots of detritus. Increasing the flow any more would mean that many of my softy & LPS would not like the conditions. I quickly concluded that I would have to siphon this stuff out every 2-3 weeks & that is exacly what I did for at least 5-6 times.
I could see clear patches of stuff in certain areas, but with each successive time I saw less & less of it. Something was clearly happening. I did not quite understand it, but was happy with the outcome nonetheless. It was not the flow in the tank that caused this state, for I had the same equipment when I first started. Furthermore, the flow of the tank has diminished since it first started. Now it's not as violent a flow & actually might be on the low side (all depending on position in the tank).
What the hell can it be? Magic? Now I am at the point where I have more fish than I first started, but I see NO buildup as compared to 3 months into my setup. (4 tangs, 2 damsels, 1 GSM, 1 hawk, 1 blenny, & plenty o'corals). I also feed frozen food like there is no tomorrow. I see the fish poop & it falls/breaks up on the floor. Yet it never builds up & I have not had the need to siphon for months. I am prepared to do it, but there is nothing there for me to pickup. The bottom of the floor is clean! I cant find anything behind the rocks, or even behind the tank corners, where there are dead spots.
Recap of tank conditions.
-Same eqiupment as when first started 90g tank
-Less flow rate now, since pumps have settled down & have gotten clogged over time
-More corals & rocks on the floor of tank now. Which in theory should obstruct the flow & allow further trappings of detritus.
-More fish, corals, & frequency of feedings
-No more detritus in main tank & no need to siphon (twist will be revealed tomorrow)
Are bacteria these little mini magicians? I wish I knew exactly what it was, but I can only assume. I had hoped for this state with my previous setups, but it never came to be. I have seen this state with other tanks that had sand in them & was jealous (you bastards!!!). They appear to be clean, self sufficient- with something recycling the debris. I have more to say on this subject & still have not revealed my secret. Actually it's no biggie, but simply a new way that I would approach a BB tank that I think would be more efficient/beneficial & slightly more appealing. Nothing that has not been done before, just a slightly different way of looking at it.
TBC tomorrow (or later on today as it stands).