Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - Getting Started
Click Here to Login

Join Aquarium Advice Today
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
Old 10-26-2019, 11:27 AM   #1
Aquarium Advice Newbie
Join Date: Oct 2013
Posts: 6
Cycling trouble

I've been out of the hobby for a few years and recently decided to come back. I set up a 55 US gal tank at the end of September and have been doing a fishless cycle. I've done it before but things don't seem to be going smoothly this time. I have a marineland penguin 350b filter, pool sand for substrate and I'm using the API liquid test kit. My cycle was going smoothly until Thursday. My nitrites had been quite high and and had finally began to drop to 0. But it seemed my nitrates, which had previously been around 40 ppm were in a free fall as well. My ammonia has remained around 2 ppm. I checked my pH and it had dropped to 6.0. I did a small water change, about 15 gallons, and reassessed everything later and the only thing that changed was my pH. I read that your pH can fluctuate through out the day so I checked it several times yesterday and it went from 6.4 to 7.2 back to 6.0 and was 7.6 again this morning. My ammonia is still at 2 ppm and my nitrates look to be between 5 and 10 ppm. Nitrites are 0. I have no ammonia in my tap water but I do have about 5 ppm nitrates in my tap. My tap water is also very alkaline at around 8.6 right out of the tap and it off gases to 7.4 after 24 hours. What is going on with my cycle? Why is my pH fluctuating so wildly? I have no decorations in the tank and I have a heater set to about 82 farenheit so the water is warm. I feel like I messed something up and I have no idea how to fix it.

Littleboo is offline   Reply With Quote
Old 10-26-2019, 04:24 PM   #2
Aquarium Advice FINatic
SaraB's Avatar
Join Date: Nov 2018
Location: Ontario Canada
Posts: 742
Are you planning on ever putting decorations in there? Beneficial bacteria lives on the surface of things so I always thought you put everything in before cycling. It also lives in your filter media so you might be ok.
Nitrates at 5-10 ppm are good, you don't want them 20+
Nitrites at 0 is perfect
Ammonia also has to be at 0 I think keeping up with water changes will help with this.

Sorry i have no idea what is happening with your PH This website might helphttps://www.firsttankguide.net/ph-troubleshooting.php
SaraB is offline   Reply With Quote

cycling, trouble

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Trouble cycling jester23 Saltwater Fish Only & FOWLR 14 06-08-2010 11:20 PM
Trouble cycling an Eclipse 12 neurotik Freshwater & Brackish - Getting Started 15 07-08-2009 10:48 AM
new tank-trouble getting it to even start cycling! RG5384 Freshwater & Brackish - Getting Started 6 02-04-2006 10:23 PM
Cycling Trouble frankjr Freshwater & Brackish - Getting Started 33 02-20-2005 02:21 PM
trouble cycling minotaur Freshwater & Brackish - Getting Started 14 01-26-2005 03:52 PM

» Photo Contest Winners

All times are GMT -4. The time now is 06:20 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.