<a href=showthread.php?s=&postid=6733790#post6733790 target=_blank>Originally posted</a> by Reefflections
Simon
Also the sand reflects light back into the system.I was also wondering saying you have a deep sand bed,could you pull it out after say 1 year,and just replace it.Or does this totally,threw the balance off with Prod?
Hi Curt - thanks for the info
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- I only have a MSB - 3 inches in total depth - first layer very fine aragamud - next layer miracle mud - from previous system to seed the sand bed then a thicker layer of 'live' aragonite. This is in the sump and has a floor space of 20% of the the main BB tank (which I covered in white perspex to reflect light back up) . I also have a low LR/water volumn ratio of about 0.56/1 Since dosing prodi the NO3 is rock solid zero using both sera and salifert kits. I conclude from that that I dont need more sand or rock for the bacs to live in for the bioload.
If I experience problems in the future that I can isolate to the sand bed - I would take it out or replace it gradually - that way the changes would be slow - I can't see how that would disturb Prodi functioning as there are fresh innoculations every other week.
[/QUOTE] .There must have been,very bad results to come out with start 2? [/B][/QUOTE]
I'v seen that said by a few people - I dose Start 2 on a daily basis but at half the recommended amount (0.5 ml per 100ltr) and the film on the glass has reduced. I notice tangblack also doses another brand of bac carbon daily too.
[/QUOTE].Getting back to the sand been issue.I really wonder now,being off Zeo now.If this really comes into play with the sand bed.Yes there are Zeo users with "no" sand beds.Yet others do have sand beds.I really begin to wonder now.If Zeo would have been a lot easier,if a sand bed was in place.The reason why I question this is.It seems the sand bed would pull in the additives that's being added.When there is no sand bed,kinda of getting the feeling a really radical approach.Because once you dose,you have just the rock,that's it.I could be wrong here.But wonder if it's easier to control your system? [/B][/QUOTE].
IMO - appart from the benefits of aragonite sand bed buffering the PH and adding a small contribution to CA/ALK/Str, and hosting a source of zoo plancton - if there is enough LR in the system to for biofilms to develop - that would be able to handel the bio load (depending on food inputs). As I say I have a very low LR/water capacity ratio and the readings are fine.
[/QUOTE].Also the Zeo products are VERY strong.As you know Simon,by adding AA,CV,PFI. [/B][/QUOTE].
Yes - I dose conservatively with these non ZB3 Zeo products - and have had no negative experiences so far- infact given 0 NO3 PO4 levels I understand these (or alternative) food and elements are important for coral health. Tangblack is doing an experiment for a month just using Prodi products - will be interesting to see his results.
On the risk front - we'v yet to hear Iwans opinion - but so far tangblack's experience is good as is mine - Prodi does what it says. No STN, RTN, or bleaching.
Curt - just out of curiosity - have you any pics you could post pls?
Cheers
Simon