Jump to content
East1

5-Gallon Acropora System

Recommended Posts

East1

I'm going to start documenting a new small nano tank in this thread, 

I want to look at aquascaping this time round, so I'll start with some inspiration 

 

1810282366_WhatsAppImage2021-02-01at00_24_04.thumb.jpeg.c4eb53e3ce1952b2359d7eaa958375ed.jpeg1496846124_WhatsAppImage2021-01-31at03_22_22.thumb.jpeg.b4f4be39c405fd6df3c0166712e2e39b.jpeg

475958805_WhatsAppImage2021-02-01at00_04_00.thumb.jpeg.5bd9f6cf4e9caa94e9a99b301d3046e4.jpeg1768109102_WhatsAppImage2021-02-01at00_04_45.thumb.jpeg.01a35794b4ee0d7eda492333adb750a4.jpeg

744163186_WhatsAppImage2021-01-31at18_42_04.thumb.jpeg.f848b5dcfad3277ee2e43fc72d42dd24.jpeg

 

 

 

 

  • Like 2
  • Wow 1

Share this post


Link to post
East1

482379690_WhatsAppImage2021-02-19at18_07_53.thumb.jpeg.aee0991506a4170946d95fdd635dd4c3.jpeg

  • Like 4

Share this post


Link to post
Pjanssen
3 hours ago, East1 said:

I'm going to start documenting a new small nano tank in this thread, 

I want to look at aquascaping this time round, so I'll start with some inspiration 

 

1810282366_WhatsAppImage2021-02-01at00_24_04.thumb.jpeg.c4eb53e3ce1952b2359d7eaa958375ed.jpeg1496846124_WhatsAppImage2021-01-31at03_22_22.thumb.jpeg.b4f4be39c405fd6df3c0166712e2e39b.jpeg

475958805_WhatsAppImage2021-02-01at00_04_00.thumb.jpeg.5bd9f6cf4e9caa94e9a99b301d3046e4.jpeg1768109102_WhatsAppImage2021-02-01at00_04_45.thumb.jpeg.01a35794b4ee0d7eda492333adb750a4.jpeg

744163186_WhatsAppImage2021-01-31at18_42_04.thumb.jpeg.f848b5dcfad3277ee2e43fc72d42dd24.jpeg

 

 

 

 

Nice. Australia?

Share this post


Link to post
East1
12 hours ago, Pjanssen said:

Nice. Australia?

I'm not actually sure, I collected these as part of an hours long youtube dive-video binge. I just really like that acro/sand zone interface at the bottom of the structure a lot 

  • Like 2

Share this post


Link to post
East1

ea49c728-049b-4ca5-ae18-d7306dde5a77.thumb.jpg.4ac439dd61b6c82c76b6bcad5ffe7f82.jpg

 

With a Prime HD and Freshwater HD, it looks very brown and natural during the day

  • Like 4

Share this post


Link to post
fabiocassa74

amazing aquarium, your tanks and a few others really inspired me to get back to the hobby after more than 20 yrs

Share this post


Link to post
justincasper

Does the combo of Primes give off a more natural look than when you ran a Radion with all channels at 100%?

Share this post


Link to post
East1
On 4/8/2021 at 6:46 AM, justincasper said:

Does the combo of Primes give off a more natural look than when you ran a Radion with all channels at 100%?

It's been quite a while since I had the radions, but I think so yeah. I don't run both primes at 100, I have all the blues at 100% all day, then perhaps 20% warm white and 15% cool white (there are more overall cool white LEDS compared to warm so this is a balanced intensity)

 

The result is that it looks like a really deep, defined sunlight, while still giving good coral colouraton, I think the warm white gives a whole new dimension to it 

  • Like 2

Share this post


Link to post
East1

128499218_WhatsAppImage2021-04-11at17_33_35.thumb.jpeg.ad3b68ee0bd4f050136a3649d410aa96.jpeg

 

A view through 3.5 gallons

  • Like 1

Share this post


Link to post
East1

image.thumb.png.38252afc40d01a626d3f45da1185ea98.png

 

5 days worth of Alk testing and minor (>10%) dosing adjustments to stabilise the midday reading

  • Like 1

Share this post


Link to post
East1

It seems there's a really strong relationship between Carbon as CaCO3, Carbon as organic carbon (Vodka, ZEOStart etc) and Phosphate/Nitrate. 

 

The Co:Ci relationship seems to influence coral and ecosystem health as a vector, so if you are adding more inorganic C to organic C, in the case of dosing 2 part and vodka, you have a stable pH and a reduction of nutrient. The amount of Organic C to inorganic C influences P:N. So if you're adding Co and Ci, you need to be adding N and P somehow and neglecting to do this will influence the corals.

 

The amount of P and N influences a number of things, I'll list them in order of severity, least severe first - this relates mostly to Acropora beacuse they display symptoms and can be affected in a matter of minutes in some cases:

  1. Coral colouration
  2. Coral Polyp extension 
  3. Growth
  4. Metabolic collapse - this one is EXTREMELY dangerous, being in a ratio of higher N:P and very low to zero levels for both results in pale corals, basal tissue recession and eventually the coral will look 'dry'. Also you'll notice the polyps don't show and almost dissappear, they literally shrink at the lowest levels of P where the coral will consume it's reserves of phosphate and start to shut down. When it's 'dry' or receeding and polyps don't show, adding PO4 with or without a facilitator (especially KZ Flatworm Stop and Coral Booster) will reverse the 'dryness' and polyp extension visibly in moments, when I figured this out within 20 minutes the coral looked different and within a day it started to regain depth to colour. Polyps went from non existent to showing. 

Dosing PO4 using the above, after a day I saw a new host of colours on my corals too. I have cyano and I think the cyano locking up available PO4 was starving out the corals, coincidentally I recall a number of tanks with unhealthy coral and cyano so I wonder if this is regular. Increasing the ratio of Organic C to inorganic C also makes this worse - aka, vodka dosing will increase cyano which further skews the N:P balance. In this state, adding amino acids and organic nitrogen makes it far worse too. 

 

so it seems there's a runway effect, between Co and Ci, and N:P. I recall Triton talking about this with thier STN X product too which fortifies my theory a bit. It seems imbalance of C imbalances N and P, and this is directly shown by coral - hence the age old 'burnt tips' with low nitrate and high Kh, what this actually means is that the ratio of Co:Ci : N:P is off, and it causes metabolic imbalance and that 'dry' tip look. 

 

the most interesting thing of all of this is that while my P was so low, only one coral showed signs and the others looked fine, that coral was also most susceptible to temperature swings. I theorise that the corals kept in these imbalanced conditions can compensate with their internal biology to a point, - STN and after that point it is total shutdown and death - RTN. It's important to be able to recognise the markers for these conditions because I expected a tank would show symptoms across the coral population. 

 

This compounded balance point seems to have a far stronger impact than anything related to trace element imbalances I've experienced so far. 

  • Like 1

Share this post


Link to post
mitten_reef
3 hours ago, East1 said:

It's important to be able to recognise the markers for these conditions because I expected a tank would show symptoms across the coral population. 

one reason that visual observations and "knowing your corals" are very important.  Just want to add to this statement, not all corals would exhibit symptoms at the same stress point, even within the same genus ie. different acroporas have diff tolerance.   after a while, you'll know which is your tank's "canary"  

Share this post


Link to post
East1

still some cyano 😅

 

1316327028_WhatsAppImage2021-04-15at19_37_08.thumb.jpeg.a91bc2a47488c2381b0dc9cab73c0090.jpeg

  • Like 1

Share this post


Link to post
East1

spacer.png806107938_WhatsAppImage2021-04-17at13_30_36.thumb.jpeg.3eb454e8e46a975187cb4bbac726d23a.jpeg

  • Like 5

Share this post


Link to post
East1

224080540_WhatsAppImage2021-04-30at22_39_08.thumb.jpeg.1d64129e0782e8075c75f4c8da9902aa.jpeg

  • Like 3
  • Wow 1

Share this post


Link to post
East1
6 hours ago, East1 said:

IMO the biggest issue with moving a tank is sandbed stability - even if you use a fresh aragonite sandbed and existing rock with a cup to seed the sandbed, there are some chemical processes that need to bottom out for stability - including po4 adsorbtion to the aragonite, which in itself gives a substrate for diatoms > hair algae > cyanobacteria due to the po4 local concentration. 

 

This then causes algal blooms that can outcomplete corals for nutrients, especially po4, which is a huge risk factor because po4 starvation will cause STN/RTN in acropora and I expect similar stresses in other corals. 

 

To that end, I'd recommend cycling the new tank with existing tank water and establishing a biological base in the sand bed if you're keeping it before moving corals. If you had no sand and just liverock, then moving to a new tank is far simpler because most of the processes don't change at all from an ecological / chemical point of view 

3 hours ago, East1 said:

I've not done much experimentation in this vein, but with my most recent tank I started with 99% synthetic ceramic rock, and fresh sand ( a mix of aragonite and some cheap crushed coral). In the beginning I did dose some PO4 but didn't test as in this stage I expect it wouldn't show on a test kit. I kept dosing alongside some nitrate in a 3:1 ratio till I saw signs of algae growth and then stopped. My thesis was that at this point there was adequate adsorbed phosphate on the Caco3 structure of the sand and synthetic rock that the system was saturated.

 

From this point I got some hair algae that turned into a huge bloom, followed by dieoff and replacement by cyano which also bloomed very strongly and slowed subsequently. During the hair algae stage I noted that the corals were fine and the tank processed nutrient as normal, however during the cyano stage the acros showed heavy phosphate starvation signs - poor PE and a thinning to their flesh. Dosing PO4 combined with Zeo FlatwormStop and Coral Booster reversed this within minutes. FWS and CB are vectors that the corals seem to take up very well and also bind to other elements somehow, as I've used them as a vector for trace elements too. Based on this quick recovery I theorised that the hair algae used what it could, before being out-competed by the cyano able to uptake directly from the adsorbed PO4 on the rock and sand which were locking up PO4 from the corals. 

 

since dosing nitrate and phosphate daily (I'd estimate 0.02-0.05ppm PO4 a day, and about 2-5ppm Nitrate daily) the cyano has eased off and I've seen an increase in coralline growth and also coral growth in the past 2-4 weeks. =

 

I got a bit convoluted but I think it's important to know the full opicture here - you're essentially trying to fill any phosphate reservoirs, to establish cyano and effectively determine the low point of PO4 in the tank, at this point you can add PO4 and it'll be consumed within biological processes fuelled by carbon and skimmed out or consumed by corals. 

 

Mathematically I guess you're derivating the lowpoint of phosphate as a usable element in whatever form it can sequester in the reservoirs of a tank, with the sand being a big component. Going through this process navigates through the most dangerous phas of biostability that would affect sensitive corals and allows you to then create a proper mode of phosphate cycling and removal via biology as opposed to via PO4 removers.

 

I would further theorise that's why you see some people with rock that grows awful algae in certain spots, and why some people will have high phosphates for extended periods - you can't just remove it from the water because the water is simply a buffer zone between the biological reservoirs of Po4 and the physical chemical reservoirs of Po4, and balancing this is important for long term stability. 

 

 

 

Just crossposting this from another thread so I can save my thoughts. 

 

Here's a photo of the tank and the sump

 

235774716_WhatsAppImage2021-05-06at19_48_20.thumb.jpeg.a4eccbf18205e9fa1dbfe5819be3bb1d.jpeg

  • Like 2

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recommended Discussions

×
×
  • Create New...