Reef Central Online Community

Go Back   Reef Central Online Community > General Interest Forums > New to the Hobby
Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Unread 08/14/2019, 07:39 AM   #1
Jamie S
Registered Member
 
Join Date: Aug 2019
Posts: 9
Maturing tank help-diatoms and cyano

I have 75gallon acrylic hex tank I started in january. I started to get a diatom bloom (I think) a couple months ago. It started as a light brown covering the rocks and got darker and thicker and moved to the sand and the glass. I hated the look of it and was brushing the rocks trying to remove, stirring the sand lightly etc. It turns the filter sponges brown and nasty! I then stated to get what looks like cyano on the sand and some of the rocks. Then I had an ich breakout so I removed the fish for treatment and left just the 2 nems and cleaner shrimp. While the fish were away i started treatment for the cyano. I pulled some of the rocks and scrubbed them and sprayed peroxide to remove a bit of green algae that was growing, then rinsed and put back. I used chemiclean and and syphoned as much as i could from the sand. It seemed to look better, rocks looked cleaner and cyano gone. I did a big water change and added tims one and only in case the process killed any beneficial bacteria. The fish were then ready to add back to the tank. Its only been maybe a week and looks like the diatoms and cyano are coming back. The water test only showed phospahtes a bit high at .08. Ammonia and nitrates were zero. I added some phosguard to bring phosopahtes a little lower and will test again. The water is clear and I am very particular about cleaning and I want the sand to be white. Should I just let the diatoms do their thing even with how ugly they look? But the cyano can be bad so I don’t know what else to do. I am using RODI water and instant ocean reef crystals. I want to start with some soft corals after I get all this sorted out and thinking of switching to the fritz salt. There was no magnesium detected after water change and not sure how that is possible unless its just bad salt or they don’t have any in it. All of my equipment is HOB, I try to keep things simple. I have a good pump for mechanical filtration and a good protein skimmer. Thoughts???


Jamie S is offline   Reply With Quote
Unread 08/14/2019, 07:54 AM   #2
j.falk
Registered Member
 
Join Date: May 2017
Posts: 632
Stop messing with it. You need to let the tank go through the ugly tank stages of diatoms, cyano and hair algae. They will eventually go away on their own...just stay consistent with your regular water changes.

It typically takes an aquarium at least 1 year to fully mature.

p.s. Your ideal of the sand staying white is unrealistic. There are no bright white things in the ocean because everything eventually gets covered in algae.



Last edited by j.falk; 08/14/2019 at 08:03 AM.
j.falk is offline   Reply With Quote
Unread 08/14/2019, 08:10 AM   #3
Jamie S
Registered Member
 
Join Date: Aug 2019
Posts: 9
Lol Thanks for the info. I will see how it goes. What schedule do you recommend for water changes? There is different info out there. Some put on a strict schedule or none at all and some do it based on water testing. And which salt do you recommend for a tank that will eventually have coral?

I just see a lot of pics/videos online with white sand so I thought it was possible in a tank.


Jamie S is offline   Reply With Quote
Unread 08/14/2019, 08:43 AM   #4
Uncle99
Crab Free Zone
 
Uncle99's Avatar
 
Join Date: Sep 2017
Location: Ontario, Canada
Posts: 2,906
Diatoms feed on silicates and once consumed, will end.
I change 10% water every week to keep my
Major/Minor elements on point.

It doesn’t matter much about salt, many people have great success with RC.

Personally I use RED SEA PRO, mainly because it mixes high in the ranges, is consistent, bucket after bucket and mixes fast and clean.

If your going to get corals upcoming, start getting all 8 parameters stable now.

Stability is everything in this hobby.


Uncle99 is offline   Reply With Quote
Unread 08/14/2019, 08:52 AM   #5
j.falk
Registered Member
 
Join Date: May 2017
Posts: 632
Quote:
Originally Posted by Jamie S View Post
Lol Thanks for the info. I will see how it goes. What schedule do you recommend for water changes? There is different info out there. Some put on a strict schedule or none at all and some do it based on water testing. And which salt do you recommend for a tank that will eventually have coral?

I just see a lot of pics/videos online with white sand so I thought it was possible in a tank.
I change my water once every 1 1/2 - 2 weeks depending on how busy I am. I usually change 25% of my water while using a gravel vacuum to clean 1/2 of the sand substrate at the same time. Tank stays nice and clear and (after the new tank diatom/cyano bloom) my sand stays fairly white.

Salt - I stick with IO Reef Crystals...been using it for years without issue so I'll keep using it.


j.falk is offline   Reply With Quote
Unread 08/14/2019, 12:26 PM   #6
mcgyvr
Registered Member
 
mcgyvr's Avatar
 
Join Date: Sep 2003
Location: North Carolina
Posts: 20,050
Most often when you try to maintain "pristine"...Nature will fight back and you will lose.
You have a fish only tank right?
If so turn off the lights and keep them off until the cyano/diatoms are gone..
If its getting a lot of natural light then try to block as much of that as you can.. The fish only need a dim light to navigate/eat..

Keeping the light off removes a major source of energy for both cyano and diatoms.. Give the diatoms time to consume the available silicates and do NOT stir the sand unless you want to prolong that process.


__________________
Who me?
mcgyvr is offline   Reply With Quote
Unread 08/14/2019, 03:25 PM   #7
j.falk
Registered Member
 
Join Date: May 2017
Posts: 632
Quote:
Originally Posted by mcgyvr View Post
Most often when you try to maintain "pristine"...Nature will fight back and you will lose.
You have a fish only tank right?
If so turn off the lights and keep them off until the cyano/diatoms are gone..
If its getting a lot of natural light then try to block as much of that as you can.. The fish only need a dim light to navigate/eat..

Keeping the light off removes a major source of energy for both cyano and diatoms.. Give the diatoms time to consume the available silicates and do NOT stir the sand unless you want to prolong that process.
His original post says he has fish and 2 anemones.


j.falk is offline   Reply With Quote
Unread 08/14/2019, 05:42 PM   #8
outssider
Registered Member
 
Join Date: Nov 2009
Location: Reseda, Ca.
Posts: 1,717
Quote:
Originally Posted by j.falk View Post

p.s. Your ideal of the sand staying white is unrealistic.
My sand stays white !.....


__________________
Please don't feed the bears because the bears will become dependent on free handouts and forget how to take care of themselves …...

Current Tank Info: 75 Gal. Mixed reef mostly sps
outssider is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -6. The time now is 08:19 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright ©1999-2022
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.