maandag 28 mei 2012

2012-05-28 08:39 hbos Perch eggs hatched after 28 days

Weather     : Sunny / WNW wind 3 bft / Rain 0.0 mm / 1017,0 hpa
Divers        : Erna, Remko, Axel
Goal          : Visisbility check Watersamples
Max depth  : 11.4
Duration     : 52 minutes
Air temp     :  21.9 celsius
Water temp : 15.6 celsius minimum
Thermocline: Only 1 degree difference at 10 mtrs from 15 to 16 celsius, but still nice distinct layer.
Fish           : >5 Perch, 1 Carp, Very dense with Waterfleas, 4 Eals resting between algea. Young shrimp, 3 Pikes
Plants        : Algea a little less than 4 days before.
Visibility     : 8 mtr at 6 mtr depth
Yellow viz     8 mtr at 3 mtr depth (at Reel)
Remarks     : > 6 divers in water
An enormous cloud of dust around the reel with a Pike  underneath. Perch eggs have hatched after 28 days!

Watersample taken at 3 and 6 mtr depth. Eals still are taking long naps while anchored and camouflaged in algea.

vrijdag 25 mei 2012

2012-05-24 20:00 hbos


Weather     : sunny and humid / ENE wind 3 bft / Rain 0.0 mm / 1025.7 hpa
Divers        : Remko ,Axel
Goal          : Visisbility check, Watersamples at 15 meters in milky layer
Max depth  : 15.3
Duration     : 73 minutes
Air temp     : 21.6 celsius
Water temp : 12.4 celsius minimum
Thermocline: none
Fish           : > 10 eals, 1 Zander, Young shrimps less dense with Waterfleas.
Plants        : Thick dots wire algea growth explosion. Tube algea growing longer and thicker.
Visibility     : 5 mtr at 3 mtr depth  
                  6 mtr at 6 mtr depth at 
Yellow viz   : Same readings without lightsource as baseline with use of lightsource
Remarks     :  >  8 divers in water.
Camera cleaned and watertight again. Enormous dots of wirealgea in the range up to 5 mtr depth. Below that visibility is much better. Took watersample at 15 mtr depth of misty region, which isn't as thick as it was and after april 13th it remains at 14 mtr level. Good view of the reefblocks. Between the 5 and 2 mtr depth range there are many large eals hiding between the algea growth. Surface temp gas risen 2 degrees in 4 days time hence the algea explosion.
NO3 and NO2 levels still remain constant.

Results watersample at 15 mtrs depth compared to 6 mtr sample. Only NO2 and NO3 is significantly higher at 15 mtr.

Conductivity=1,022 mS/cm

PH =7,94

NO2= 0,4 mg/l

NO3= 5,0 mg/l

KH= 7 DH

GH= 12 DH

CO2= 2,59 mg/l

O2 = 4 mg/L

maandag 21 mei 2012

2012-05-20 17:05 hbos

Weather     : half clouded sunny and humid / E wind 2 bft / Rain 15.4 mm / 1007,4 hpa
Divers        : Erna ,Axel
Goal          : Visisbility check
Max depth  : 9.0
Duration     : 64 minutes
Air temp     :  17.0 celsius
Water temp : 12.4 celsius minimum
Thermocline: none
Fish           : 4 Perch, 2 very big Carps, approx 7 Common Bream, Very dense with Waterfleas.
Plants        : wire algea have seemed to stop growing. Tube algea growing longer and thicker, new shoots of pondweed at about 1-3 mtr depth 
Visibility     : 6 mtr at 7 mtr depth
Yellow viz   : 8 mtr at 7 mtr depth (at Reel)
Remarks     :  4 divers in water
Vertical visibility is about same as horizontal. Extremely dense clouds of waterflees Exeptional good visibility despite working airpumps. Perch eggs are still in place. Unfortunately my camera jammed.

First Watersample results taken at 3 and 6 mtr depth!











zondag 13 mei 2012

2012-05-13 hbos 08:03

Weather     : Clear / SW wind 2 bft / Rain 0.0 mm / 1032 hpa
Divers        : Remko, Kacper ,Axel
Goal          : Long dive and visisbility check
Max depth  : 13.5
Duration     : 107 minutes
Air temp     :  12.0 celsius
Water temp : 11.6 celsius minimum
Thermocline: none
Fish           : 3 pike, 1 Zanders, 1 Perch, 1 eal, 2 Carps waterfleas in misty area's
Plants        : wire algea new shoots of pondweed at about 1-3 mtr depth 
Visibility     : 5 mtr at 3
Yellow viz   : 5 mtr at 3
Remarks     :  > 15 divers in water
Check on distance. Found a boat. Usual debris,Despite the fact that pumps are on visibility at 13 mtr is still oke at east side. Saw two Carps in the usual spot. More milk like between 6 and 1 mtr depth but still 5 meters visibility. 
Saw two dead moulded birds (Coots) again.

vrijdag 11 mei 2012

2012-05-10 20:17 hbos

Weather     : Clouded / S wind 3 bft / Rain 3.3 mm / 1012.7 hpa
Divers        : Remko, Kacper ,Axel
Goal          : Overall impression
Max depth  : 12.0
Duration     : 73 minutes
Air temp     :  17.7 celsius
Water temp : 10.8 celsius minimum
Thermocline: none
Fish           : 3 pike, 2 Zanders, 1 Perch, 1 eal. waterfleas in misty area's
Plants        : wire algea new shoots of pondweed at about 1-3 mtr depth 
Visibility     : 5 mtr at 3 and 6 mtr depth estimated
Yellow viz   : not used
Remarks     :  > 10 divers in water
Found one moulded fish on bottom. Pike, Eal and Zander are territorial and reside in the same area.
There is more white sediment in the water than before. Tube algea at 5 meter depth, Wire algea is growing bigger.
Water temp rises very gradually.

2012-05-08 20:09 hbos

Weather     : Clouded / S wind 3 bft / Rain 3.8 mm / 1009.7 hpa
Divers        : John, Ted, Jan,Axel
Goal          : Visibility check
Max depth  : 10.3
Duration     : 64 minutes
Air temp     :  12.8 celsius
Water temp : 10.4 celsius minimum
Thermocline: none
Fish           : none
Plants        : wire algea new shoots of pondweed at about 1-3 mtr depth 
Visibility     :  5 mtr at 3 and 6 mtr depth
Yellow viz   :  6 mtr at 3 and 6 mtr depth
Remarks     :  > 4 divers in water
Did viz check and skills.

maandag 7 mei 2012

2012-05-03 19:58 hbos

Weather     : Clouded / SSW wind 3 bft / Rain < 0.05 mm / 1010 hpa
Divers        : John, Axel
Goal          : Visibility check
Max depth  : 14.8
Duration     : 68 minutes
Air temp     :  11.8 celsius
Water temp : 10.0 celsius minimum
Thermocline: none
Fish           : 1 Zaner, 3 eals, 1 big perch.
Plants        : wire algea 
Visibility     :  5 mtr at 3 and 6 mtr depth
Yellow viz   :  7 mtr at 3 and 6 mtr depth
Remarks     :  > 4 divers in water
Made Picture of a completely bare tarpaulin which normally is overgrown with mussels. You can see them in the picasa photo album under the album tarpaulin.
There is a cloud of dust hanging under the platform. Mist remains at 14 mtr depth.No significant changes as to previous dive. 

dinsdag 1 mei 2012

2012-05-01 19:17 hbos first Perch eggs

Weather     : high clouds / NNW wind 0 bft / Rain ?? mm / 1020 hpa
Divers        : Remko, Axel
Goal          : Visibility check
Max depth  : 14.2
Duration     : 65 minutes
Air temp     :  11.2 celsius
Water temp : 8.8 celsius minimum
Thermocline: none
Fish           : 1 Pikes, 2 eals, 2 bigger perch.
Plants        : wire algea is growing bigger
Visibility     :  5 mtr at 3 and 6 mtr depth
Yellow viz   :  7 mtr at 3 and 7 mtr depth
Remarks     :  2 divers in water.
FIRST Perch eggs!!!!! at 9 meters and a few at 6 mtrs behind Paviljoen. At 14 meter depth no sign of mist in front of Paviljoen. We spotted an eal at 13 meter depth swimming away. That is the third time in a row I see free swimming eal. Visibility at depth is very good since we can see 3 piles. Later on we spot another eal in hiding. 2 perch swim at 7 meters. Wire algea at 6 meters is really starting to grow bigger now. After viz measurement it is rather misty between the piles and also millions of waterfleas. As soon as you come out of the mist the waterflea intensity is way less. 
I did see thermocline like layers in the water but that is just sediment clouds.

2012-04-30 11:22 hbos

Weather     : Clear sky / ENE wind 3 bft / Rain 0 mm / 1016.1 hpa
Divers        : Erna, Axel
Goal          : Looking around
Max depth  : 8,5
Duration     : 41 minutes
Air temp     : 21 celsius
Water temp : 8.4 celsius minimum
Thermocline: none
Fish           : 1 Pike, 2 eals.
Plants        : Curly pondweed at northside approx 10 cm high
Visibility     :  6 mtr at 3 and 6 mtr depth (estimated)
Remarks     :  < 5 divers in water
fisherman at Northside We spotted eals at 8 mtrs one in hiding and one in the open swimming away.
very few waterfleas.