Marko
 

Arent you the guy that is against water changes?

If so, physically remove with a syphon, clean your top layer of gravel, every day for 3 days, and I bet that will fix your problem.

Start changing your water more often if youre not. I believe, if this is the same person, this is the second time you have had issues that may be solved by water changes.

Nate

Read the entire thread

I run a sulphur denitrator that is controlled with an ORP controller and had it running while I dosed chemiclean, the denitrator functioned properly the whole time, therefore, the chemiclean did not kill the good bacteria in the reactor so I dought it killed the good bacteria in my tank.
The package says it is safe and after using it I have to agree, I so absolutely no ill effects other than a whacked out skimmer.

I believe that I am a water change nut, I did daily 10% water changes for a month while battling the cyano, I've gone thru 4 200 gal boxes of reefcrystals since new years in a 90 gal tank, my tank is cyano free thanks to chemiclean.
Just do it, you won't regret it.

Cal

25yrs. reefing......dozens of tanks both with and without sand. My experience, ONLY, if I had sandbed I had cyno....if I run bare or starboard, no cyno. Period. Nothing in between.
and yes I know lots have sand and no cyno but thats it in a nutshell for me.

:D

yeah sand is most likely the cause of many problems. but i just dont like the look of bare bottom. so i went with about an inch of sand.

i think the risk of sand is worth it

+1 on the sand, I just can't bare the site of a tank without it.

i just dosed 20 scoops of chemiclean. how long does it take to get rid of the cyano, its starting to kill my corals.

can i still run a skimmer fully open?

follow the instructions

no skimmer, UV, ozone, chemipure or carbon for 24 hours

multiple air stones is good.

it takes 24 to 48 hours

Turn your filtration back on after 24 hrs(except skimmer), keep the air stones running.

Be ready to start daily 20% WC after 48 hours, run fresh carbon, it will take 2 or 3 days before you can run your skimmer.

i find it very strange that some of my corals are dying through all this and some seem to be thriving

With everything I have heard, and by all means this is just speculation, but is it possible that with your new flow, that there isn't a proper exchange of water from the bottom of the tank to the sump? I know you have MP40s now, and they are great but you still need some movement up and down, I do this by directing the returns downward... food for thought.... couldn be why some corals are reacting harshly because they arent getting the oxygen provided by the sump? Feel free to give me a call Marko if you run into more issues....

Steve

i have no idea. i just cant see there being issues with flow. i get mini sand tornados rising from the sand when the powerheads speed up.

also one of the corals that i pulled out that was dead was an sps that was 6 inches from the top of the tank :( it was good this morning and now all white

heres a video showing how much flow i have on the sand bed.

and notice the patch of cyano right infront of it

http://www.youtube.com/watch?v=V-bjM5uN_eo

did you dilute the chemiclean before you put it in the tank? possible that some touched that coral?

Steve

I diluted it and poured it into the sump.

Im out of options here.... just trying to figure out why things that work for everyone else never seem to work for you.... mutant tank? haha

Steve

Ass
 

You're obnoxious... Good luck with your problem. I was more so inquiring if you did regular water changes or just did a little one for the first time in a couple years due to the cyano.

Read my entire post

Do you have your skimmer running with the cup off? I've heard of many people doing this while running chemiclean. Either that or some form of air stone.

When I used the chemiclean in my tank, it took a day or two.

if you read the thread you'd see i did everything you suggested

its defiantly messed up.

Do you do regular water changes?

I've used chemi-clean in tanks up to 2500 gallons multiple times, and never once has a tank crashed......

No screwing around, 100% recommend chemi-clean; all of the site sponsors carry it, do yourself a favour ( OP ) and save yourself the time; try it out.

no because there is no need to do water changes if a person has other methods of nutrient export.

i dont have a single patch of hair algae or any other kind of algae in my tank

perhaps you have no algae because the cyano from hell is consuming all the nutrients that arent being exported:wink:......the solution to pollution is dilution and no W/Cs = no dilution.....

ok but i've had cyano for a month...... not for the last 14 months i've had my tank setup:lol:

If orp drops below 350 I'm turning the skimmer back on.

It's at 391 now. Usually hangs around 400-420

water changes
 

My tank is 4 months old, had no other algae problems except had a bad case of cyano. Its a 10g nano and cyano was covering everything. Here's how I got rid of it; weekly 2.5g water changes and sucked up as much of it as I could. The water changes worked and its all gone.

Water changes
 

You ask for advice as long as its what you want to hear. Do some water changes I bet your cyano goes away.

I maintain about 50 tanks in Calgary and tend to only get cyano in tanks with too low flow, tanks that have had persistent low kh, and tanks that dont get enough water changes. Water changes and increased flow have solved the problem Every time. And yes, it's at about the 8-14 month mark when you tend to see this problem
Build up.

Do you clean your gravel?

No I ask for advice and you suggested things I had already done. I vacuumed the gravel 5 times now and it always comes back 2-3 days later.

I only have 1-1.5 inches of sand anyway.

Since the cyano started I have done water changes with no improvement.

I've got alternate methods of nutrient reduction, which is why I don't do frequent water changes. I dose alk, calc, mag, strontium and iodine.

That's interesting on the low kh, mine is low in both my tanks and I have to dose, it sits around 6. I see issues with corals as a result, but was not aware it contributed to cyano. My small tank hasn't had any issues since the initial setup and its now 13 months old...that said, theres only 1 eel, cuc and some soft corals. I did get rid of the cyano before I started dosing in the larger tank. Are you saying its a combination of the above?

I do regular weekly 10% water changes, and vacuum the substrate every 2 weeks, run HC GFO, carbon, and maintain balanced ca and alk and mag, change filter socks every 2 days, skim wet, run a sulphur denitrator, but once cyano rears its ugly head your pretty much screwed, you can do water changes til the cows jump over the moon but it just won't work, I'm thankful for chemiclean.

Sounds like you did it right, not sure how it could have messed you up, run lots of air to keep oxygen up, chemiclean is an oxidizer so maybe there was an underlying issue with some corals that caused them to die, they may have died in time anyway. See it through, get rid of the cyano and regroup.

Good luck!

Hit the nail on the head......

Yahtzee.....

And what is it that I wanna hear?

I'm looking for answers that might actually help. Not generic responses that I can find with a quick google search

Some of us are trying to give you sound advise and share our real world experiences to help you make informed decisions, a lot of people have used chemiclean successfully with no ill effects in all types of reef tanks, I researched it like crazy before I did it and have no regrets, I think you must have some unseen issue with your tank, which could be responsible for the cyano in the first place (I had some acans die that caused mine).

I wanna hear that you are making progress, are you?

And I took your advice and dosed chemiclean yesterday. Waiting to see results

OK, you should be seeing results by now, tomorrow the cyano will be gone.

Well
 

Well I really hope your cyano clears up.

I too have used chemi-clean... In fact it's in my glovebox. When cyano happens to one of my customers tanks, they want it gone now. Instead of saying itll be gone in 3-4 weeks with me doing some dedicated water changes and adjusting chemistry, perhaps adding a power head. I will sometimes just add chemi clean to get rid of it, all the while knowing the I will have to adjust the problem that was causing it in the first place in the future. However the customer is happy for the meantime and I can fix the issue after.

Marlo, please keep up with the water changes. It will help in the long run.

Chemi clean can sometimes be like a bandaid fix. Not really fixing the problem causing it.

The only other thing that I can think of that could make a difference is that I have changed everyone of my 50 tanks off of nls foods as I find them to be really dirty. I am now feeding 95% hikari both frozen and pellets (marine a, marine s, as seaweed extreme) and have had significantly less brown algae on the glass, and less outbreaks of cyano.

Water changes are your friend.

A combo or even just one of the factors