Pond Boss Magazine
https://www.pondboss.com/images/userfiles/image/20130301193901_6_150by50orangewhyshouldsubscribejpeg.jpg
Advertisment
Newest Members
janeparker, Bgeezy, bclimb1983, WeaponsUSMC, LaughingWaters
16760 Registered Users
Forum Statistics
Forums36
Topics38,080
Posts516,646
Members16,760
Most Online3,583
Jan 15th, 2020
Top Posters
esshup 24,343
ewest 20,242
Cecil Baird1 20,043
Bill Cody 13,375
Who's Online Now
16 members (canyoncreek, Kyscentlok, nehunter, Steve_, RStringer, Bocomo, Matzilla, RER, TrapperUtah, Cliff76169, McClellanW, ItalyBASS, Bob Lusk, Journeyman, Pat Williamson, Nick LaFave), 261 guests, and 451 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Tilapia al swimming on surface. Why?
#523520 07/12/20 06:02 AM
Joined: Jul 2020
Posts: 1
M
OP Offline
M
Joined: Jul 2020
Posts: 1
Yesterday, I did a water exchange like I normally do while I vacuumed the bottom of my 1500 gallon pond. Following that most of my young tilapia (2nd and 3rd generation) started hovering on the surface while gulping for air while swimming backward in unison. Total fish in pond including goldfish is perhaps 200.

Re: Tilapia al swimming on surface. Why?
msears48 #523522 07/12/20 06:12 AM
Joined: Jul 2005
Posts: 4,461
Likes: 3
Lunker
Offline
Lunker
Joined: Jul 2005
Posts: 4,461
Likes: 3
Fish piping at the surface is a sign of a dissolved oxygen sag. Are you aerating?



Re: Tilapia al swimming on surface. Why?
msears48 #523523 07/12/20 07:04 AM
Joined: Apr 2012
Posts: 176
J
Offline
J
Joined: Apr 2012
Posts: 176
They used to swim in schools on the surface in my pond.

Re: Tilapia al swimming on surface. Why?
msears48 #523542 07/12/20 07:01 PM
Joined: Jan 2009
Posts: 24,343
Likes: 7
Moderator
Ambassador
Field Correspondent
Lunker
Offline
Moderator
Ambassador
Field Correspondent
Lunker
Joined: Jan 2009
Posts: 24,343
Likes: 7
Low O2. When you did the water exchange, was it well water or was it water that had O2 in it? My guess is water was put into the tank/pond that had little or no O2 and it dropped the O2 level in the pond by half.


www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).
Re: Tilapia al swimming on surface. Why?
msears48 #523547 07/13/20 08:05 AM
Joined: Jun 2016
Posts: 1,856
Likes: 18
Offline
Joined: Jun 2016
Posts: 1,856
Likes: 18
+1 on low dissolved oxygen.

In my old aquarium keeping days, a 10% water change was considered safe so long as the frequency was often enough. The frequency depends on the bio load in the aquarium. If I let the tank get off schedule, I would often perform a 20% water change without issue. I was not pushing the limits of biomass to gallons of water.

How much water was exchanged? How often is this performed? How much biomass in the tank? What was the difference in water temp between tank water and new water? What's the average length of fish?


Fish on!,
Noel

Link Copied to Clipboard
Today's Birthdays
Dan B, jbrockey, Rob Love
Recent Posts
Pond Liner
by Kyscentlok - 08/06/20 02:56 PM
cyprinid eggs survive inside migratory waterfowl
by Matzilla - 08/06/20 01:15 PM
Pond design 101
by wps456 - 08/06/20 12:46 PM
New member/ city kid
by Bocomo - 08/06/20 12:39 PM
Restoring a bluegill pond
by Matzilla - 08/06/20 10:51 AM
Tilapia Harvest
by Theo Gallus - 08/06/20 10:04 AM
A Crappie Problem
by RStringer - 08/06/20 09:47 AM
Building new forage mini pond
by snrub - 08/06/20 09:44 AM
1/8 Acre Mountain Creek Fed Pond
by BruceC - 08/06/20 07:42 AM
In the middle of a pond renovation, Indiana
by canyoncreek - 08/06/20 07:29 AM
Threadfin shad or Gizzard shad?
by TGW1 - 08/06/20 07:13 AM
Clear woods before digging, or at the same time?
by Steve_ - 08/05/20 06:39 PM
Newly Uploaded Images
Gast Pump Housing
Gast Pump Housing
by RWoodshvac, July 4
dam blowout/convert to spillway
dam blowout/convert to spillway
by drrehak, June 30
Transport Cooler
Transport Cooler
by Shorty, June 7
Fish Habitat or Fish Trap
Fish Habitat or Fish Trap
by Phoenix, May 30
Fawn Pic
Fawn Pic
by bryani289swmi, May 28

� 2014 POND BOSS INC. all rights reserved USA and Worldwide

Powered by UBB.threads™ PHP Forum Software 7.7.4